Question

(D) A hemispherical bowl made of brass has inner diameter 10.5cm.
Find the cost of tin-plating it on the inside at the rate of Rs.16 per
100cm2. ( =2)​

Answer 1

Answer:

Inner radius (r) of hemispherical bowl = (10.5/2) cm = 5.25 cm Surface area of hemispherical bowl = 2πr2 Therefore, the cost of tin-plating the inner side of the hemispherical bowl is Rs 27.72.Read more on Sarthaks.com - https://www.sarthaks.com/115533/hemispherical-bowl-made-brass-inner-diameter-find-cost-tinplating-the-inside-the-rate-per