A circular lawn of radius 21 m is surrounded by a path of uniform width 3.5 m
MATHEMATICS · Multi-part · CBSE · Mathematics · Areas Related to Circles · Areas Related to Circles
Problem
A circular lawn of radius 21 m is surrounded by a path of uniform width 3.5 m. The path is to be paved with bricks, and its outer boundary is to be fenced. Use π=722.
(i) Find the area of the path.
(ii) If paving the path costs Rs 120 per square metre, calculate the total cost of paving.
(iii) Determine the length of fencing required for the outer edge of the path and find its cost at Rs 250 per metre.