Selina Concise Mathematics Class 10 ICSE Solutions Cylinder, Cone and Sphere Selina Publishers Concise Mathematics Class 10 ICSE Solutions Chapter 20 Cylinder, Cone and Sphere (Surface Area and Volume) Cylinder, Cone and Sphere Surface Area and Volume Exercise 20A – Selina Concise Mathematics Class 10 ICSE Solutions Question 1. The height of a circular cylinder is 20 cm and the radius of its base is 7 cm. Find : (i) the volume (ii) the total surface area. Solution: Question 2. The inner radius of a pipe is 2.1 cm. How much water can 12 m of this pipe hold? Solution: Question 3. Solution: Question 4. How many cubic meters of earth must be dug out to make a well 28 m deep and 2.8 m in diameter? Also, find the cost of plastering its inner surface at Rs 4.50 per sq meter. Solution: Question 5. What length of solid cylinder 2 cm in diameter must be taken to recast into a hollow cylinder of ex...
You will find answers of ICSE Text Books here