Question

Find the radius and circumference of a circle whose area is 144 pie cm2
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Answer 1

Step-by-step explanation:

Area =144 ×π

πr2=144π

r2=144

r=12unit

and circumference=2πr

=2π×12

=24π.

=24×22/7

=528/7 unit

Answer 2

Answer:

Area of circle=144$\pi$

area of circle=$\pi$r^2

$\pi$r^2=144$\pi$

$\pi$r^2=144^

r^2=144

√144=√12*√12=12

circumference of circle=2$\pi$r

2*22/7*12=

44/7*12

528/7

75.42cm^2