281 A rectangular field 30 m long and 20 m broad. How much deep it should be dug so that from the earth taken out, a platform can be formed which is 8 m long, 5.5 m broad and 1.5 m high where as the earth taken out is increase by 10/5? Mathematics Medium Full question → A 12 cm B 10 cm C 18 cm D 24 cm
282 Calculate the number of bricks, each measuring 25 cm * 15 cm * 8 cm required to construct a wall of dimensions 10 m * 4 m * 5 m when 10% of its volume is occupied by mortar? Mathematics Medium Full question → A 4000 B 5000 C 6000 D 7000
283 If in a box of dimensions 6 m * 5 m * 4 m smaller boxes of dimensions 60 cm * 50 cm * 40 cm are kept in it, then what will be the maximum number of the small boxes that can be kept in it? Mathematics Medium Full question → A 500 B 1000 C 900 D 600
284 A brick measures 20 cm * 10 cm * 7.5 cm how many bricks will be required for a wall 25 m * 2 m * 0.75 m? Mathematics Medium Full question → A 24000 B 23000 C 22000 D 25000
285 In digging a pond 20 m * 10 m * 5 m the volumes of the soil extracted will be_________? Mathematics Medium Full question → A 100 cu.m B 1000 cu.m C 10000 cu.m D 2000 cu.m
286 If the height of a cone is increased by 100% then its volume is increased by_________? Mathematics Medium Full question → A 100% B 200% C 300% D 400%
287 A cylinder and a cone have a same height and same radius of the base. The ratio between the volumes of the cylinder and cone is__________? Mathematics Medium Full question → A 1:3 B 3:1 C 1:2 D 2:1
288 The length of the longest rod that can fit in a cubical room of 4 m side is? Mathematics Medium Full question → A 8.66 m B 5.196 m C 6.928 m D 7.264 m
289 The area of the cardboard(in cm2) needed to make a box of size 25 cm * 15 cm * 8 cm will be__________? Mathematics Medium Full question → A 1390 cm2 B 695 cm 2 C 1280 cm 2 D 1220 cm 2
290 A tank 3 m long, 2 m wide and 1.5 m deep is dug in a field 20 m long and 14 m wide. If the earth dug out is evenly spread out over the field, the level of the field will raise by nearly? Mathematics Medium Full question → A 0.299 cm B 0.29 cm C 2.98 cm D 4.15 cm
291 A river 2m deep and 45 m wide is flowing at the rate of 3 kmph the amount of water that runs into the sea per minute is? Mathematics Medium Full question → A 4500 M3 B 27000 M 3 C 3000 M 3 D 2700 M 3
292 The dimensions of an open box are 52, 40 and 29 cms. Its thickness is 2 cms. If 1 cm3 of metal used in the box weighs 0.5 gms, the weight of the box is________? Mathematics Medium Full question → A 8.56 kg B 7.76 kg C 7.756 kg D 6.832 kg
293 The ratio of the volumes of a cube to that of the sphere which will fit inside the cube is________? Mathematics Medium Full question → A 4:3 B 4:2 C 4:4 D 6: π
294 A room is 15m long, 4m broad and 3m height. Find the cost of white washing its four walls at 50p per m2 ? Mathematics Medium Full question → A Rs.60 B Rs.57 C Rs.55 D Rs.52
295 How many meters of carpet 50cm, wide will be required to cover the floor of a room 30m * 20m? Mathematics Medium Full question → A 1000 B 600 C 2400 D 1200
296 A rectangular courtyard, the sides of which are in the ratio of 4:3, cost Rs.600 for paving at 50 p per m2; find the length of the diagonal of the courtyard? Mathematics Medium Full question → A 25 m B 35 m C 45 m D 50 m
297 If the sides of a cube are in the ratio 4:3. What is the ratio of their diagonals? Mathematics Medium Full question → A 4:3 B 16:9 C 64:27 D 3:4
298 Three cubes of metal whose edges are 9, 12 and 15 cm respectively, are melted and one new cube is made. Find the edge of the new cube? Mathematics Medium Full question → A 21 cm B 19 cm C 32 cm D 18 cm
299 The ratio between the radii of two spheres is 1:3. Find the ratio between their volumes? Mathematics Medium Full question → A 27:1 B 1:27 C 1:9 D 9:1
300 How many shots of 1cm radius can be prepared from a sphere of 3cm radius? Mathematics Medium Full question → A 36 B 64 C 27 D 16