Question

The circumference of a circle is 31.4 cm. Find the radius and the area of the come (Take $\pi =3.14$)

Answer 1

Let the radius be $r$

Given circumference of the circle is $31.4cm$

$⟹2\pi r=31.4⟹r=5$

Area of the circle is $\pi r^2=\left(3.14\right)\left(5^2\right)=78.5c{m}^2$