Question

A table top is semicircular in shape with diameter $2.8m$. Area of this table top is

• A. $3.08m^2$
• B. $6.16m^2$
• C. $12.32m^2$
• D. $24.64m^2$

Answer 1

The correct option is A

$3.08m^2$

Given,

Diameter of semicircular shape $=2.8m$

So, radius of semicircular shape $=\frac{2.8}{2}=1.4m$

Then, area of semicircular shape of table top $=\frac{1}{2}{\mathrm{\pi r}}^2$

$$\begin{gathered} =\frac{1}{2}x\frac{22}{7}x{\left(1.4\right)}^2 \\ =\frac{1}{2}x\frac{22}{7}x1.4x1.4 \\ =3.08m^2 \end{gathered}$$

Hence option (A) is the correct option.