Question

Question 3
If the circumference of a circular sheet is 154 m, find its radius. Also, find the area of the sheet. $(Take\pi =\frac{22}{7})$

Answer 1

Given: Circumference of the circular sheet = 154 m
We know that, circumference of the circle = $2\pi r$
$\Rightarrow$ $2\pi r=154m$
$\Rightarrow$ $r=\frac{154}{2\pi }$
$\Rightarrow$ $r=\frac{154\times 7}{2\times 22}=24.5m$
Now, area of circular sheet = $\pi r^2$
$=\frac{22}{7}\times 24.5\times 24.5=1886.5m^2$
Thus, the radius and area of circular sheet are 24.5 m and 1886.5 $m^2$ respectively.