Find the circumference of a circle whose area is 81pie r sq
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area of circle is πr²
81π = πr²
81π/π =r²
= 81 = r²
r = 9
circumference of circle is 2πr = 2 x 22/7 x 9
= 56.57
hope it help you
81π = πr²
81π/π =r²
= 81 = r²
r = 9
circumference of circle is 2πr = 2 x 22/7 x 9
= 56.57
hope it help you
jeel96:
false ans
then what's the answer
ohhhh
sry
question may be u Written wrong
area may be 81π
yeah..... question may be wrong.....
once u see that question heel96
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