A hemispherical bowl made of brass has inner diameter 105cm Find the cost of tinplating it on the in...

Question

A hemispherical bowl made of brass has inner diameter 105cm Find the cost of tinplating it on the inside at the rate of 32 per 100cm2

Accepted Answer

ANSWER It is given that Inner diameter of the hemispherical bowl 105cm Inner radius of the hemispherical bowl 1052 525cm We know that Inner curved surface area of the bowl 2 r2 By substituting the values Inner curved surface area of the bowl 2 227 5252 On further calculation Inner curved surface area of the bowl 2 227 275625 So we get Inner curved surface area of the bowl 17325 cm2 It is given that Cost of tin plating inside 32 per 100cm2 So the cost of tin plating 17325 cm2 32 17325100 5544 Therefore the cost of tin plating it on the inside is 5544

RS Aggarwal Solutions Class 9 Mathematics Solutions for Volume And Surface Area Of Solids Exercise 15D in Chapter 15 - Volume And Surface Area Of Solids