MATHEMATICS · Subjective · CBSE · Mathematics · Areas Related to Circles · Areas Related to Circles
Problem
A square lawn has each side measuring 28 m. A circular jogging track is planned around another ground such that the boundary length of the circle is equal to the perimeter of the square lawn.
(i) Determine the radius of the circular track, taking π=722.
(ii) Calculate the difference in area enclosed by the circular track and the square lawn.
(iii) The extra circular area found in (ii) is to be paved with stones that cost ₹2 per square metre. Estimate the total cost.