Question

The circumference of a circle is 10$\pi$ cm , find the radius and the area of the circle . (Take $\pi$ = 3.14)

Answer 1

Circumference of circle = $2\pi r$

$2\pi r=10\pi 2r=10r=5$

Area of circle is $\pi r^2$

= $3.14\times 5\times 5$

= $3.14\times 25$

= $78.5c{m}^2$