Question

A saree has 30 circular designs of embroidery in it. The radius of each design is 2.1cm. If the embroidery costsRs.0.5 per sqcm. Find the money spent on embroidery

Answer 1

Total area of 30 circles = 30×area of each circle
= 30×πr^2
= 30× 22/7 × 2.1×2.1= = 415.8 cm^2
total cost = 415.8×0.5 = 207.9rs/-