Question

find the radius and the circumference of a circle whose area is 144πcm² ​

Answer 1

Answer:

Using the formula

A = π r²

Radius = 6.7 cm

Answer 2

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Area of circle=πr²

So,

πr²=144π

r²=144

r=12cm

Circumference of circle= 2πr

= 2×$\frac{22}{7}$×12×12

=904.77cm²