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?
A. 4000
B. 5000
C. 6000
D. 7000
Basic Arithmetic
If the height of a cone is increased by 100% then its volume is increased by_________?
A. 100%
B. 200%
C. 300%
D. 400%
In digging a pond 20 m * 10 m * 5 m the volumes of the soil extracted will be_________?
A. 100 cu.m
B. 1000 cu.m
C. 10000 cu.m
D. 2000 cu.m
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?
A. 0.299 cm
B. 0.29 cm
C. 2.98 cm
D. 4.15 cm
The area of the cardboard(in cm2) needed to make a box of size 25 cm * 15 cm * 8 cm will be__________?
A. 1390 cm2
B. 695 cm2
C. 1280 cm2
D. 1220 cm2
The length of the longest rod that can fit in a cubical room of 4 m side is?
A. 8.66 m
B. 5.196 m
C. 6.928 m
D. 7.264 m
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__________?
A. 1:3
B. 3:1
C. 1:2
D. 2:1
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?
A. 4500 M3
B. 27000 M3
C. 3000 M3
D. 2700 M3
The ratio of the volumes of a cube to that of the sphere which will fit inside the cube is________?
A. 4:3
B. 4:2
C. 4:4
D. 6: π
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________?
A. 8.56 kg
B. 7.76 kg
C. 7.756 kg
D. 6.832 kg