Question

A cubical block of side 10 cm is surmounted by a hemisphere. What is the largest diameter that the hemisphere can have? Find the cost of painting the total surface area of the solid so formed, at the rate of `5 per 100 sq. cm. [Use π = 3.14] ​

Answer 1

Answer:

greatest diameter is 10cm

TSA of the solid=surface area of cube+CSA of hemisphere

{6(10)^2-π(5)^2}+2π5^2

600-25π+50π

600+25π

600+25*314/100

600+157/2