Question

A circuar path is surrounded by a road 2m wide if radius of park is 105 find the area of road

Answer 1

Inner radius = r1 = 105m

Outer radius = r2 = 105 + 21 = 126m

Area of the road

$\longrightarrow$$\sf{π( {r2}^{2} - {r1)}^{2}}$

$\longrightarrow$$\sf {\frac{22}{7} (( {126)}^{2} - ( {105)}^{2} ) {m}^{2}}$

$\longrightarrow$$\sf{ \frac{22}{7} \times 231 \times {21m}^{2}}$

$\longrightarrow$${\boxed{\sf{15246m}^{2}}}$