Questions on Geometry: Circles and their properties answered by real tutors!

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Geometry: Circles and their properties

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Question 225288: I have a square with 48ft sides what is the area of the base of the largest circular grain bin i can construct. i have the answer but cant figure it out. The first thing i did is 48ft squared it to give me 2304ftsq then im lost
Click here to see answer by nerdybill(2446)

Question 229541: Two circles have perimeters that add up to 12π centimeters and areas that add up to 20π square centimeters. Find the radius of each circle. Give exact answers.
Click here to see answer by jsmallt9(594)

Question 229763: Find the center and radius of the circle given by the equation x^2 + y^2 - 8x + 2y - 11 = 0
Click here to see answer by nerdybill(2446)

Question 229689: ABC is a triangle in which AB=AC. A circle through B touches AC at D intersects AB at P.If D is the mid point of AC, prove that AB=4AP.
Thank You
Click here to see answer by ly12603(33)

Question 195: what does pie equal to. 2
Click here to see answer by tonsiaj38(1)

Question 232659: A large, irrigated crop circle is 400 meters in radius. Correct to the nearest tenth of a hectare, how many hectares of land are contained in this circle.

Click here to see answer by ankor@dixie-net.com(6693)

Question 232710: a ball has radius of 10 inches. find the surface area. leave the answer in terms of pie.
Click here to see answer by rfer(2688)

Question 232525: Find the circumference of a circle 3.75 ft. Use 3.14 pi and round your answer to one decimal place. I really do not understand how to solve this question. Do I multiply 3.14 with 3.75? I come up with an answer of 1177.50. If this is correct, how then do I convert this answer into ft? Do I move the decimal to 11.77 and the answer is 11.77 ft? Please any help will be appreciated. Thank you.
Click here to see answer by ankor@dixie-net.com(6693)

Question 233000: suppose the radius of the circle is 3.5 yards. what is the the diameter?
Click here to see answer by edjones(3298)

Question 233000: suppose the radius of the circle is 3.5 yards. what is the the diameter?
Click here to see answer by Alan3354(6092)

Question 233017: the radius is 7.5 what is the diameter and the circumference
Click here to see answer by solver91311(5072)

Question 233317: Two circles, both with the diameter 1.2 meter are placed so that there centers are 0.6 meter apart from each other. How big area does the two circles cover? I have tried to write a picture over it and tried with the formulas for sectors and segments but I can't come up with the right answer. I know it's about 1.82 squaremeters but an explanation would be great.
thanks
Click here to see answer by Alan3354(6092)

Question 233635: a circular dinner plate has a radius of 13 cm.
calculate the area of the plate.
Click here to see answer by nerdybill(2446)

Question 234013: Given the formula A=πr2, where A=1256 m2 and π=3.14/ descrbe the steps used to solve for "r". Showing is not enough
Click here to see answer by nyc_function(260)

Question 234030: What is the "FORMULA" for find out AREA of "ARCH"
Click here to see answer by dawny74(8)

Question 234521: An angle is five times its complement. What is the measure of the angle?
Click here to see answer by nyc_function(260)

Question 235086: How do i find the radius of a circle when only 20mi. in diameter is given?
Click here to see answer by solver91311(5072)

Question 235086: How do i find the radius of a circle when only 20mi. in diameter is given?
Click here to see answer by Alan3354(6092)

Question 235965: my clindrical tank is 82 inches high and 248 inches long. what is the diameter?
a question my younger brother ask. and i do not know. need your help.
Click here to see answer by solver91311(5072)

Question 236896: x-y/3=2
Click here to see answer by nyc_function(260)

Question 237121: the radius is 11.7cm what is the circumference
Click here to see answer by rfer(2688)

Question 237123: what is the circumference of 14m
Click here to see answer by Alan3354(6092)

Question 237227: 1)If the sum of the areas of two circles with radii r1 and r2 is equal to the area of
a circle of radius r, then
a) r1 +r2 = r b) r1^2 +r2^2 = r^2 c) r1 +r2 < r d) r1^2 +r2^2< r^2
2) 2) If the sum of the circumferences of two circles with radii R1 and R2 is equal to the
circumference of a circle of radius R, then

(A) R1 + R2 = R (B) R1 + R2 > R (C) R1 + R2 < R
(D) Nothing definite can be said about the relation
among R1, R2 and R
Click here to see answer by edjones(3298)

Question 237641: Given the cirle (x+2)squared + (y-5)squared = 25
a) find the center and radius
b) graph the circle
Click here to see answer by Alan3354(6092)

Question 238034: The radius of a circle whose circumference is equal to the sum of the circumferences of the two circles of diameters 36cm and 20 cm is
(A) 56 cm (B) 42 cm (C) 28 cm (D) 16 cm

Click here to see answer by anantha(74)

Question 239337: It is proposed to build a single circular park equal in area to the sum of areas of two circular parks of diameters 16 m and 12 m in a locality. The radius of the new park would be
(A) 10 m (B) 15 m (C) 20 m (D) 24 m
Click here to see answer by Theo(675)

Question 239338: The diameter of a circle whose area is equal to the sum of the areas of the two
circles of radii 24 cm and 7 cm is
(A) 31 cm (B) 25 cm (C) 62 cm (D) 50 cm
Click here to see answer by Theo(675)

Question 240236: Three circles each of radius 3.5 cm are drawn in such a way that each of them
touches the other two. Find the area enclosed between these circles.
Click here to see answer by solver91311(5072)

Question 241113: I don't understand how to find the area of a segment of a circle.
For example the question says, Find the area of the smaller segment whose chord is 8" long in a circle with an 8" radius.
Click here to see answer by Alan3354(6092)

Question 241318: if the volume of a cylinder is 462 and the height is 12 what is the radius?
Click here to see answer by checkley77(7072)

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