Questions on Geometry: Area and Surface Area answered by real tutors!

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Question 832190: At her country house, Rosa has a square flower garden. She puts 200 feet of new fence all the way around the garden to keep her granddaughter, Mia, out of the garden. How many square feet of space does her garden have?
A) 160
B) 250
C) 2,500
D) 1,600
In my opinion it 1,600. Am I correct?

Click here to see answer by MathTherapy(10552) About Me 

Question 832246: A hemispherical wash basin has an internal diameter of 22 cm. The basin has a uniform thickness of 10 cm. What is the area of the inner and outer surfaces of the wash basin? Answer in square centimetres correct to four significant figures.
Please show working out

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Question 832347: what is the surface area of a right cone whose base diameter is 40 cm and whose slant height is 21 cm? Round your answer to the nearest tenth
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Question 832532: A bathroom had a length of 3 feet and total area of 27 ft.What is the width of the bathroom
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Question 833185: a photograph measuring 7 1/2 cm by 5 cm is enlarged so that the larger side is 24 cm. What is the length of the shorter side?
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Question 833523: Nine Workers Are Hired To Harvest Potatoes From A Field. Each Is Given A Plot Which Is 11 X 10 Feet In Size. What Is The Total Area Of The Field?
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Question 834199: the length of a cuboid box is 3.8cm.find the total surface area when its one face open
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Question 835014: A hailstone with diameter of 5.6 fell. It weighed about 0.018 lb/in compared to the normal 0.033 lb/in for ice. About how heavy was this hailstone?
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Question 835089: find the total amount in an account if $2500 is invested at 6.1% simple interest for 3.5 years
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Question 835088: find the surface area of a cylinder with a radiues of 2cm and height of 50cm. Use 3.14 for pie
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Question 835088: find the surface area of a cylinder with a radiues of 2cm and height of 50cm. Use 3.14 for pie
Click here to see answer by Alan3354(69443) About Me 

Question 835181: 4.5 × 5.5 diameter=? How many centimter?
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Question 835411: find the area in square meters of a piece of cardboard 1m 25cm wide and 2m long
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Question 833829: If the length of a rectangle is three times the width, W, what is the perimeter of the rectangle in terms of W?
(A) 2 (3+W)
(B) 4 (3+W)
(C) 3W
(D) 4W
(E) 8W
My answer key says the answer is (E), but I don't understand how you get the answer. Please help me!

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Question 834211: a rectangle with one side 4 c.m. is
inscribed in a circle of
radius 2.5 c.m. then find
the aria of rectangle?

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Question 833398: If the scale factor of two similar figures is 3:5, what is the ratio of their corresponding areas?
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Question 828727: The radius of a basketball is 4.1 times that of a baseball. How many times larger is the surface area of the basketball. Please explain.
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Question 828727: The radius of a basketball is 4.1 times that of a baseball. How many times larger is the surface area of the basketball. Please explain.
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Question 835423: The area is 200.96. What is the length of its diameter?
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Question 834992: A quadrilateral has 4 sides 46m,46m,60m,70m. What is its area. No area or height is given. How to find it. Please give me the answer with solution.
Thankyou

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Question 835815: how many spheres of diameter 1 cm can be made out of a sphere of area 324π.
Click here to see answer by Theo(13342) About Me 

Question 836092: find side of cube whose surface area is 2400 cm

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Question 836354: the area of a circle inscribed in a right triangle with sides of length 8 metre, 15 metre and 17 metre is
Click here to see answer by richard1234(7193) About Me 

Question 836929: If plywood comes in pieces that measure 8 feet by 4 feet, how many pieces of plywood are needed to cover the roof? Assume tht both halves of the roof are the same.
Roof is 42ft by 25ft

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Question 837483: The area of a rectangle is 360 inches^2. The ratio of the length to the width is 5:2. Find the length and the width
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Question 837614: if there was a surface area of 1000cm squared in a cylinder what whould be its hieght and diameter.
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Question 837626: I have a problem: For a world Peace day celebration the students at cabot high school are making a 6 m by 8 m flag. Each of the six grades will create a motif to honor the people of the six inhabited continets. Sketch three possible ways to divide the flag. One into six congruent triangles; one into sixs triangles with equal area but none congruent; and one into six congruent trapezoids. Give measuresments or makings on your sketches so each class knows it has equal area
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Question 838167: 2 consecutive sides of a rectangle are in the ratio 5 to 7. the area is 140 cm. find the dimensions of rectangle
Click here to see answer by josmiceli(19441) About Me 

Question 838479: I feel so lost and hope I'm doing at least some of this right, can someone show me where I am messing up?

Consider a circle of radius 1, and corresponding circumscribed polygons with the number of sides n = 3, 4, and 6. Drawing a diagram will be extremely helpful.
A: For each n = 3, 4, and 6 what are the areas of the circumscribed polygons with n sides? You must show your work.
B: Both areas approach a limiting value as n gets larger and larger. What number would this be and why?
C: For each n = 3, 4, and 6 what are the perimeters of the circumscribed polygons with n sides? Show your work.
D: The perimeter approaches a limiting value as n gets larger and larger. What number would this be and why?

This is what I have so far:
A:
3 area of circumscribed polygon with n sides is 1/2AP=1/2(1)(6 sqrt3)= 3 sqrt3~ 5.2
4 area of circumscribed polygon with n sides is 2x2=4
6 area of circumscribed polygon with n sides is 1/2AP = 1/2(1)(12/sqrt3)=6/sqrt3~3.5
B:
Area approaches the area of the circle of radius one: π
C:
3 Perimeter of circumscribed polygon with n sides is 2sqrt3 so 6sqrt3 ~ 10.4
4 each side has length 2, so 8
6 each side has length 2/sqrt3 1 so 12/sqrt3~6.9
D:
The area approaches the circumference of the circle of radius one: 2π

Any help would be very much appreciated!

Click here to see answer by edjones(8007) About Me 

Question 838433: I'm building a kiln. How many 4"x8" bricks are needed to build the pit, size 8' in diameter by 4' high?
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Question 838705: 12 1/2 to 3 equal pecies
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Question 838705: 12 1/2 to 3 equal pecies
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Question 838723: Find the surface area of a cube with a side the measures eight feet.
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Question 838142: step 1: 30/π∫ max: 2 min: 0) (π/6)*sec((πx)/6)dx = 30/π(ln|sec((xπ)/6)+tan((xπi)/6)|] (max: 2 min: 0)
step 2: = 30/π(ln|sec((π)/__?__)+tan((π)/__?__)| - ln|1+0|]
step 3: = (30/π)ln(__?__+sqrt(__?__))
step 4: = __?__ (rounded to three decimal places)
step 5: Thus the area of the bounded region is approximately __?__ (rounded to three decimal places).

Can you please tell me what to put where it reads __?__

Click here to see answer by KMST(5328) About Me 

Question 838979: Two circles of equal radius r cm, such that the centre of each circle lies on the circumference of the other one.
Given that sin60=(√3)/2, find an expression for the total area enclosed within the two circles.
My notes:
I have split the area needed to find into 4 right angled triangles and 4 chords. I can find the area of the combined area of 1 chord and 2 of these triangles. But I have no clue how to work out the final 2 chords area and get the answer. Look forward to hearing from you.

Click here to see answer by Alan3354(69443) About Me 

Question 839469: The perimeter of a rectangle concrete slab is 88 feet and its area is 403 square feet. What is the length of the possible side with these specification
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Question 839637: The area of rectangle lies between 40cm^2 and 45cm^2. If one of the sides is 5 cm, then its diagonal lies between?
(a) 8cm and 10 cm
(b)9cm and 11cm
(c)10cm and 12cm
(d)11cm and 13cm

Click here to see answer by ewatrrr(24785) About Me 

Question 839842: The fourth rectangular prism has the following characteristics:
-Has a volume of 360 cubic inches
-Two of the dimensions are consecutive numbers
-All the dimensions are less than 10 but greater than 4
-All the dimensions are different
-The sume of the three dimensions is 22
-One of the dimensions is 8
What are the dimensions of the rectangular prism?
Thanks so much for helping us with this problem! We are really struggling with it!
Kim
robkimkc@yahoo.com

Click here to see answer by richard1234(7193) About Me 

Question 840116: painting on a piece of canvas that has an area 180 square inches. The length of the painting is 1 1\4 times the width. What are the dimensions of the painting.
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Question 840118: An artificial lake is in the shape of a rectangle and has an area of 9/20 square mile. The width of the lake is 1/5 the length of the lake. What are the dimensions of the lake?
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Question 840158: If the area of base of a cylinder is 45 sq.cm. Height is 9 cm. find the volume and total surface area of a cylinder ?
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Question 840079: hi room size 400cm x270cm how many packs of flooring do i neede 40 planks of bamboo wood in each pack.seller says i need to buy 12 packs seems a lot for small bedroom cant convert to meters seller says room size 12 meters .thankyou .
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 840473: what is the surface area and area of the base of a cylinder if the given height is 9 cm and a volume of 144 cubic centimeter?

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Question 840548: A square with an area of 16 metres squared would have side lengths of what?
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Question 840801: What is the surface area of a cube that measures 10 inches on each side?
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840