Question

Find the diameter of a circle and it's circumference of its area is 25pie cm²?

Answer 1

Answer:

area of circle

${r}^{2} \pi$

given area of circle= 25cm^2

$\pi {r}^{2} = 25\pi \: {cm}^{2}$

${r}^{2} = 25$

$\sqrt{25} = r$

r=5 cm

hence circumference= 2πr

2πr= 2*22/7*5

=220/7

31.4285714286

Diameter of the circle =2r

2*5

10 cm

Answer 2

$10cm$

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