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/…
CBSE Class 9 Mathematics Surface Areas And Volumes Worksheet Set D
Question. The radius of a sphere (in cm) whose volume is 12π cm3, is (a) 3 (b) 3√3 (c) 32/3 (d) 31/3 Answer : C Question. If the surface area of a sphere is 144π, then its radius is (a) 6 cm (b) 8 cm (c) 12 cm (d) 10 cm Answer : A Question. The edge of a cube whose…
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…
CBSE Class 9 Mathematics Surface Areas And Volumes Worksheet Set A
Question. The surface area of a cube whose side is 5 cm is (a) 125 cm2 (b) 28 cm2 (c) 100 cm2 (d) 150 cm2 Answer : D Question. The total surface area of a cone of radius ‘2r’ and slant height ‘l/2’ is (a) 2πr (l + r) (b) πr(l + r/4) (c) πr (4r + l) (d) 2πr Answer : C…
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…
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.…