the area of the square OABC is 16 square units. The area of the circle with center O and radius OA, in square unit, is:
http://i25.photobucket.com/albums/c77/XxzxclifexX/number7.jpg
2007-03-21 00:33:12 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
The formula of the area of a square is:
A = area
s = length of one side of the square
A = s^2
therefore,
√A = s
(we will only use positive values of the square root for geometric equations, since geometric values can't have negative quantities)
Therefore, the length of the side of a square with area = 16 is 4.
The formula for the area of a circle is:
A = area
r = radius of the circle
π = pi (3.14159...)
A = π * (r^2)
Therefore,
A = π * (4^2)
A = π * 16
A = 50.265482457436692
You could probably round it to 50.265
2007-03-21 00:52:07 · answer #1 · answered by prof. hambone 3 · 1⤊ 0⤋
area of square = side multiply by side
= OA " " BC
area of circle = 22 / 7 " " radius squared
= 22 multiply by (OA by OA )
-------------------------------------
7
If OA= 5 then
22 multiply by (5 by 5 )
-------------------------------------
7
22 by 25
--------------
7
22 / 7 = 3.14
area = 3.14 by OA(squared)
2007-03-21 07:54:24 · answer #2 · answered by Hilary R 2 · 0⤊ 1⤋
50.24
2007-03-21 07:37:21 · answer #3 · answered by ravutu manohar 1 · 0⤊ 1⤋