CBSE Class 9 Mathematics Surface areas and Volumes Assignment Set A

Question. If volume and surface area of a sphere are numerically equal, find its radius. (A) 2 units (B) 3 units (C) 4 units (D) 5 units Answer : B Question. The base radius of a cylinder is 1(2/3) times its height. The cost of painting it s C.S.A. at 2 paise/…

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CBSE Class 9 Mathematics Surface areas and Volumes Assignment Set B

Question.  The diamet er of two cones are equal. If their slant heights are in the ratio 5 : 4, find the ratio of their curved surface areas. (A) 2:3 (B) 4:5 (C) 5:4 (D) 3 :2 Answer : A Question. The circumference of the base of a 9 m high wooden solid…

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CBSE Class 9 Mathematics Surface areas and Volumes Assignment Set C

Surface Areas and Volumes Q 1 Find the area enclosed between two concentric circles of radii 4 cm and 3 cm.Q 2 The diameter of a garden roller is 1.4 m and it is 2 m long. How much area will it cover in 5 revolutions?Q 3 A cuboid has total surface area of 40 sq m and its…

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CBSE Class 9 Mathematics Surface areas and Volumes Assignment Set D

Section - A Q.1  A cuboidal oil tin is 30cm X 40cm X 50cm. Find the cost of the tin required for making 20 such tins if the cost of tin sheet is Rs. 20/m2. Q.2  Find the lateral curved surface area of a cylindrical petrol storage tank that is 4.2m in diameter and 4.5m high.…

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