A solid consists of a right circular cylinder of radius 9 cm and height 0.20 m
MATHEMATICS · Multi-part · CBSE · Mathematics · Surface Areas and Volumes · Surface Areas and Volumes
Problem
A solid consists of a right circular cylinder of radius 9 cm and height 0.20 m, surmounted by a hemisphere of the same radius. The base of the cylinder is not to be painted.
Using this information, answer the following:
(i) Calculate the total curved surface area that needs to be painted. Express your answer in square metres, correct to two decimal places.
(ii) If silver paint costs Rs. 10 for every 100 cm², determine the total cost of painting the solid.
(iii) Find the volume of the entire solid and express it in litres, correct to the nearest litre.