221 The area of the floor of a room is 20 m2 that of a longer wall 15 m2 and of the shorter wall 12 m2, find the edge of the new cube? Mathematics Medium Full question → A 450 m 3 B 100 m 2 C 60 m3 D 400 m 3
222 If the sides of two cubes are in the ratio 3: 1 the ratio of their total surface area is? Mathematics Medium Full question → A 3:1 B 8:1 C 9:1 D 12:1
223 The edges of a cuboid are respectively 3cm, 4cm and 12 cm. Find the length of the diagonal of cuboid. Mathematics Medium Full question → A 5 cm B 19 cm C 13 cm D 144 cm
224 The edges of a cuboid are 4 cm, 5 cm and 6 cm. Find the volume of the cuboid? Mathematics Medium Full question → A 120 cm 3 B 120 cm2 C 148 cm 2 D 15 cm 3
225 The edges of cuboid are 4 cm; 5 cm and 6 cm. Find its surface area? Mathematics Medium Full question → A 120 cm 2 B 148 cm2 C 74 cm 2 D 15 cm 2
226 The edge of three cubes of metal is 3 dm, 4 dm and 5 dm. They are melted and formed into a single cube. Find the edge of the new cube? Mathematics Medium Full question → A 3 dm B 4 dm C 5 dm D 6 dm
227 How many cubes of edge 2 dm can be cut out of a meter cube? Mathematics Medium Full question → A 50 B 64 C 216 D 125
228 The volume of a cube is 1728 cc. Find its surface. Mathematics Medium Full question → A 864 cm2 B 648 cm 2 C 486 cm 2 D 468 cm 2
229 The surface of a cube is 24sq cm. Find its volume? Mathematics Medium Full question → A 8 cc B 16 cc C 32 cc D 64 cc
230 The edge of a cube is 2a cm. Find its surface? Mathematics Medium Full question → A 6a 2 cm 2 B 8a 2 cm 2 C 12a 2 cm 2 D 24a2 cm2
231 A solid consists of a circular cylinder with an exact fitting right circular cone placed on the top. The height of the cone is h. If the total volume of the solid is three times the volume of the cone then the height of the cylinder is________? Mathematics Medium Full question → A 2h B 4h C 2h/3 D 3h/2
232 If the radius of the sphere is doubled then it’s volume is increased by? Mathematics Medium Full question → A 100 % B 200 % C 700 % D 800 %
233 The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height. Mathematics Medium Full question → A 3 : 7 B 7 : 3 C 6 : 7 D 7 : 6
234 A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is__________? Mathematics Medium Full question → A 90 cm B 1 dm C 1 m D 1.1 cm
235 What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm? Mathematics Medium Full question → A 344.35 cm2 B 344.35 cm2 C 344.35 cm2 D None of these
236 A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube? Mathematics Medium Full question → A 2 : 1 B 3 : 2 C 25 : 18 D 27 : 20
237 Surface area of a sphere is 2464 cm2. If its radius is doubled, then the surface area of _________?the new sphere will be Mathematics Medium Full question → A 4920 cm2 B 4727 cm2 C 9856 cm2 D 19712 cm2
238 In a drawer there are 4 white socks, 3 blue socks and 5 grey socks. Two socks are picked randomly. What is the possibility that both the socks are of same color? Mathematics Medium Full question → A 4/11 B 1 C 2/33 D 19/66
239 What is probability of drawing two clubs from a well shuffled pack of 52 cards? Mathematics Medium Full question → A 13/51 B 1/17 C 1/26 D 13/17
240 What are the chances that no two boys are sitting together for a photograph if there are 5 girls and 2 boys? Mathematics Medium Full question → A 1/21 B 4/7 C 2/7 D 5/7