Question

The diameter of a circle is $28cm$. Find the one-fourth of its area.

• A. $389c{m}^2$
• B. $512c{m}^2$
  
• C. $616c{m}^2$
  
• D. $154c{m}^2$
  

Answer 1

The correct option is D $154c{m}^2$

The diameter of a circle is $28cm$
Therefore,
Radius of the circle=$\frac{28}{2}=14cm$
Therefore,
Area of the circle$=\pi (14{)}^2$

$=\frac{22}{7}\times 196$

$=616c{m}^2$

So, $\frac{1}{4}\times 616=154c{m}^2$