A=3.14r2
2006-09-22 13:35:00 · 12 answers · asked by britiani j 1 in Science & Mathematics ➔ Mathematics
211.1 cm
2006-09-22 13:37:51 · answer #1 · answered by Sheena 3 · 0⤊ 0⤋
7
2006-09-22 13:36:34 · answer #2 · answered by sexyangelkiss26 1 · 0⤊ 0⤋
A = 3.14 (8.2) (8.2)
Multiply the numbers together
=211.1336
To the nearest tenth, this is 211.1 cm^2
2006-09-23 03:56:07 · answer #3 · answered by whatthe 3 · 0⤊ 0⤋
component to circle = ?(r)^2 subsequently, the radius is 5, so we purely plug in r for 5. A = ?(5)^2 A = 25? ? is approximately 3.1416, so we are able to plug in that for ? A = 25(3.1416) *makes use of calculator* A = seventy 8.fifty 4, which rounds to seventy 8.5, decision C.
2016-10-01 06:33:33 · answer #4 · answered by ? 4 · 0⤊ 0⤋
A=pi r^2 like you said, so plug in the numbers
A=3.14*(8.2*8.2)
=3.14*67.24
=211.1336 to the nearest tenth is 211.1cm^2
2006-09-22 13:38:33 · answer #5 · answered by mim 3 · 0⤊ 0⤋
A = pi * 8.2^2
A = 211.1 cm^2 ( dont forget the units )
2006-09-22 13:38:24 · answer #6 · answered by patrick 5 · 0⤊ 0⤋
Easiest way is: double your radius to get diameter, which makes it 16.4. Then just multiply 16.4 by 3.14 and you have your area.
2006-09-22 13:45:37 · answer #7 · answered by Anonymous · 0⤊ 0⤋
211.1 cm
3.14 x 8.2 squared
don't you own a calculator?
2006-09-22 13:43:44 · answer #8 · answered by bkwrmdork 2 · 0⤊ 0⤋
211.2 square centimeters....
trust me.
2006-09-25 07:14:11 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Math sucks, its of the DEVIL.
2006-09-22 13:42:16 · answer #10 · answered by Toma 3 · 1⤊ 1⤋