Question

A circular grass lawn of $35$ m in radius has a path $7$ m wide running around it on the outside The area of the path is

• A. $1496m^2$
• B. $1450m^2$
• C. $1576m^2$
• D. $1694m^2$

Answer 1

Answer: (D)

$1694m^2$

Given, $r=35$ m
Therefore, $R=35+7=72$ m

Area of circular path $=\pi (R+r)(R-r)$

$=\frac{22}{7}(42+35)(42-35)$

$=1694m^2$