Question

Find the surface area of a circular park having diameter 50m. (Take $\pi =3.14$)

• A. 2000$c{m}^2$
• B. 1962.5$m^2$
• C. 1962.5$c{m}^2$
• D. 200$m^2$

Answer 1

The correct option is B

1962.5$m^2$

$\text{Radius}=\frac{1}{2}\times \text{Diameter}$ $=\frac{1}{2}$$\times 50=25m$
Surface area of circle with radius $r$ is $=\pi r^2$; where $\pi =3.14$
= $3.14\times$ ${25}^2$ = $1962.5m^2$