Question

A circular grassy plot of land, 42 m in diameter, has a path 3.5 m wide running around it on the outside. Find the cost graveling the path at Rs 4 per square meter.

• A. $Rs2002$
• B. $Rs2003$
• C. $Rs2004$
• D. $Rs2000$

Answer 1

The correct option is A $Rs2002$

Given : Radius ($r$) $=21m$

Radius ($R$) $=24.5m$

Required area $=\pi (R^2-r^2)$

Required area $=\pi ({24.5}^2-{21}^2)=500.5$

Cost $=500.5\times 4$

$=2002Rs$