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

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Question 636071: Find the circumference of a circle with a diameter of 21.
Click here to see answer by jim_thompson5910(35256)

Question 636075: Find the area of a circle with a diameter of 21.
Click here to see answer by solver91311(24713)

Question 636072: Find the area of a circle with a radius of 21.
Click here to see answer by jim_thompson5910(35256)

Question 636072: Find the area of a circle with a radius of 21.
Click here to see answer by solver91311(24713)

Question 636359: I have a 10 foot in diameter fountain if I build a 3 foot walkway around it what would be the square footage of the walkway?

I would like the answer and how to get the answer thank you so much zina
Click here to see answer by jim_thompson5910(35256)

Question 636313: A box has a square top and bottom. The height of the box is 5cm. Find its volume if the total surface area is 192cm^2
Click here to see answer by MathLover1(20849)

Question 636358: I have a 10ft in diameter oval pool If I build a 3 ft walkway around it what is the square footage of the walkway? the answer and how to figure it out thank you
Click here to see answer by ankor@dixie-net.com(22740)

Question 636491: A farmer has a 150m fencing wire to set up around a rectangular lot beside a river for his ducks and geese. If a 10m opening in the side of the river is left, what would be the length and width for maximum areas?
Click here to see answer by ankor@dixie-net.com(22740)

Question 636620: For a convex 51-gon, what is the sum of the measures of the interior angles?
Click here to see answer by stanbon(75887)

Question 636633: What is the measure of one angle of a regular convex 100-gon?
Click here to see answer by stanbon(75887)

Question 636633: What is the measure of one angle of a regular convex 100-gon?
Click here to see answer by Alan3354(69443)

Question 636635: The angles in a convex quadrilateral add to be _________ degrees.
Click here to see answer by stanbon(75887)

Question 636632: If QRST is a rectangle with QT = 50 and RS = 4x + 8, find x.
Click here to see answer by nerdybill(7384)

Question 637027: what is the area and circumference of a Cirle
Click here to see answer by ewatrrr(24785)

Question 637028: 23. corinne calculated the area of a paper plate to be 50.27 square inches. If the actual area of the plate is 55.42 square inches, what is the relative error in calculating the area to the nearest thousandth?
I think that I have to subtract 50.27 from 55.42 which is 5.15 and then I think I am suppost to put it over some number but I dont know which number.
thank you tim
Click here to see answer by Alan3354(69443)

Question 637510: What is the width of a circle with a perimeter of 182in and a length of 52in
Click here to see answer by solver91311(24713)

Question 637649: a house was built on a square lot whos side is 36 meter what is the area of the lot?
Click here to see answer by god2012(113)

Question 637645: a rectangular floor 12 units long and 8 units wide is to be covered w/ triangular tiles w/ side 3 units, 4 units and 5 units how many tiles are neede?

Click here to see answer by god2012(113)

Question 637799: Water flows through a pipe at 11.5 cubic inches per hour. To nearest whole number, how many cubic inches flows through the pipe each day?
Click here to see answer by Alan3354(69443)

Question 638253: A sewing box is 24 cm by 18 cm by 6 cm. What is the total surface area?
Click here to see answer by josmiceli(19441)

Question 638268: The length of rectangle is 8 cm more than twice its width. If the area is 960 cm^2. Find its length and width?
Click here to see answer by graphmatics(170)

Question 638263: How long is the piece of wood needed to frame a picture which measures 25 cm by 36 cm and the width of the wood is 3 cm?
Click here to see answer by ankor@dixie-net.com(22740)

Question 638634: The area of a square increased by 3 is the same as 35 decreased by 7 times the area. Find the are of the square.
LET: x^2 = Area of a Square
WHERE: x^2 is made greater by 3 = 35 made smaller by 7x^2
CALCULATION
x^2+3=35-7x^2
x^2+3-3=35-3-7x^2
x^2=32-7x^2
x^2+7x^2=32-7x^2+7x^2
8x^2/8=32/8=>[x^2=4]
*When I evaluate the answer, it doesn't check.
Click here to see answer by MathTherapy(10552)

Question 639958: The sides of a square were extended to form a rectangle 8cm longer and 3cm wider than the square. The area of the rectangle is 204 sq cm. What was the area of the original square?
Click here to see answer by Edwin McCravy(20055)

Question 640855: what is the length of one side of a square that has an area of 289 in2?
Click here to see answer by asuar010(338)

Question 642143: If 6400 cubes fit in the bottom of a box, what would the side-length of the box me
Click here to see answer by KMST(5328)

Question 643391: please help me verify which answer is correct#1 or #2 ?
A rectangular box with a square base is open at the top and has a volume of 12 cubic feet. Each side of the base has a length of x feet. Which of the following expresses the surface area, S,in square feet, of the outside of the box in terms of x ? (CLEP precalculus test)
#1:S=x^2+(48/x) or #2: S= x^2+(24/X)I got #2 but the answer key said #1 is correct answer. It didn't explain Why? please show me how to solve it. Thank you
Click here to see answer by MathTherapy(10552)

Question 643745: (This is a word problem)
The area of a rectangular room is 144ft�and the length of one wall is 16ft. What is the measurement of the other wall?
I need to know the steps to solving this, along with the answer. I believe it should be written as an equation, but I am not positive.
Click here to see answer by nerdybill(7384)

Question 644060: The side of one square is 2 cm longer than the side of a second square. If the combined area of the squares is 100 square cm, find the dimensions of each square.
Click here to see answer by ankor@dixie-net.com(22740)

Question 644277: How do you find the area of a diamond figure?
The coordinates I have are the following:
Q (-1,-5) U (4,5)
A (0,2) D (4,0)
Another Question:
How can I prove or disprove if a shape given is a square? (This relates to finding area because I must do so after the proving or disproving of the figure).
The coordinates are the following:
(0,9) (6,2)
(-1,-4) (-7,3)
Click here to see answer by Alan3354(69443)

Question 644767: The cube has a volume has 125 cubic centimeter. What is the area of one face of the cube?

Click here to see answer by sachi(548)

Question 644764: The volume of a cube is 125 cubic centimeters. What is the area of one face of the cube?

Click here to see answer by sachi(548)

Question 644760: What is the volume of a cube if one face has a perimeter of 36 cm?
Click here to see answer by sachi(548)

Question 645432: abcd is a trapezium in which ab parallel cd.bc and ad are the non parallel sides.it is given that ab=75cm,bc=42cm,cd=30cm and ad=39cm.Find the area of the trapezium.

Click here to see answer by Edwin McCravy(20055)

Question 646073: how to compute the area of an angle
Click here to see answer by Alan3354(69443)

Question 646662: what is the areaa of 4in dia and 10 ft long pipe
Click here to see answer by Alan3354(69443)

Question 646689: If you have a cone, and the area of the base is 16(pi)^2 in and is 3 in long (slant hight) how would you solve to find the surface area of the cone?
Click here to see answer by ewatrrr(24785)

Question 646613: find the circumference of the circle in terms of pi. the radius of the circle is 16
Click here to see answer by ankor@dixie-net.com(22740)

Question 647755: How much larger is an area of 225 cm^2 than an area of 144 cm^2?
Thank you for any help you can give.
Click here to see answer by MathLover1(20849)

Question 647779: Bonnie Wolansky has 100ft of fencing material to enclose a rectangular exercise run for her dog. One side of the run will border her house,so she will only need to fence three sides. What dimensions will give the enclosure the maximum area? What is the maximum area?
Click here to see answer by Sarpi(32)

Question 649172: The question states:
You want to mat and frame an 8x10 photograph. The perimeter of the outside of the mat is 60 inches, The mat is THREE TIMES as wide at the top and bottom as it is at the sides. Find the dimensions of the mat.
Click here to see answer by MathLover1(20849)

Question 651293: what is the perimeter of a 7cm side square?
Click here to see answer by nerdybill(7384)

Question 653439: the surface area of a cube is 54 square inches. find the length of each edge
Click here to see answer by solver91311(24713)

Question 654057: a side of a square is repersented by x-3. what expression repersents the area of the square?
Click here to see answer by solver91311(24713)

Question 654117: I need 100 squares in an area that is 25 X 39 how do I figure this?
Click here to see answer by solver91311(24713)

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