Question

Find the area of the semicircle whose radius is $4$ cm.

• A. $25.12$ sq. cm
• B. $15.12$ sq. cm
• C. $12.12$ sq.cm
• D. $21.12$ sq. cm

Answer 1

The correct option is A $25.12$ sq. cm

Given, radius $=4$ cm

We need area of semicircle with the given radius

Area of a semicircle $=$ $\frac{1}{2}\pi r^2$
$=$ $\frac{1}{2}\pi \times (4{)}^2$
$=25.12$ sq. cm