Question

The circumference of a circular field is $528m$. Then its radius is

• A. $84m$
• B. $80m$
  
• C. $76m$
  
• D. $78m$
  

Answer 1

The correct option is A $84m$

Let $r$ be the radius of the circle

Circumference of the circle $=528$

$\Rightarrow 2\pi r=528$

$\Rightarrow r=\frac{528\times 7}{22\times 2}$

$\Rightarrow r=84m$