Mathematics MCQs

Page No. 3

The radius of a cylinder is 2 r units and height is 3 r units. Find the curved surface?


a18 πr2 sq units


b3 πr2 sq units


c12 πr2 sq units


d6 πr2 sq units


View Answer 12 πr2 sq units

The diameter of a cylindrical tin is 6cm and height is 5 cm. Find the volume of the cylinder?


a30 π cc


b45 π cc


c150 π cc


d180 π cc


View Answer 45 π cc

The radius of a cylindrical vessel is 7cm and height is 3cm. Find the whole surface of the cylinder?


a308 sq cm


b220 sq cm


c440 sq cm


d132 sq cm


View Answer 440 sq cm

Find the expenditure on digging a well 14m deep and of 3m diameter at Rs.15 per cubic meter?


aRs.1185


bRs.1285


cRs.1385


dRs.1485


View Answer Rs.1485

Two cylinders are of the same height. Their radii are in the ratio 1: 3. If the volume of the first cylinder is 40 cc. Find the volume of the second cylinder?


a360 cc


b60 cc


c300 cc


d36 cc


View Answer 360 cc

Find the ratio of the curved surfaces of two cylinders of same heights if their radii are in the ratio 1:2.


a1:2


b2:1


c1:4


d4:1


View Answer 1:2

The radius of the base of cone is 3 cm and height is 4 cm. Find the volume of the cone?


a12 π cm3


b6 π cm3


c8 π cm3


d10 π cm3


View Answer 12 π cm3

The area of a base of a cone is 30 cm<sup>2</sup>. If the height of the cone is 6cm, find its volume?


a120 cm3


b40 cm3


c50 cm3


d60 cm3


View Answer 60 cm3

The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.


a74 π cm2


b36 π cm2


c48 π cm2


d24 π cm2


View Answer 48 π cm2

The curved surface of a sphere is 64 π cm<sup>2</sup>. Find its radius?


a1 cm


b2 cm


c4 cm


d3 cm


View Answer 4 cm

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