A.3 : 7
B.7 : 3
C.6 : 7
D.7 : 6
Show AnswerAnswer=Option B
Volume and Surface Area
A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:
A.4830
B.5120
C.6420
D.8960
Show AnswerAnswer=Option B
A cistern 6m long and 4 m wide contains water up to a depth of 1 m 25 cm. The total area of the wet surface is:
A.49 m2
B.50 m2
C.53.5 m2
D.55 m2
Show AnswerAnswer=Option A
50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 4 m3, then the rise in the water level in the tank will be:
A.20 cm
B.25 cm
C.35 cm
D.50 cm
Show AnswerAnswer=Option B
A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is:
A.12 kg
B.60 kg
C.72 kg
D.96 kg
Show AnswerAnswer=Option B
A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then the weight of the pipe is:
A.3.6 kg
B.3.696 kg
C.36 kg
D.36.9 kg
Show AnswerAnswer=Option B
metres will be:
66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in A.84
B.90
C.168
D.336
Show AnswerAnswer=Option A
A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, the volume of the hall is:
A.720
B.900
C.1200
D.1800
Show AnswerAnswer=Option C
A right triangle with sides 3 cm, 4 cm and 5 cm is rotated the side of 3 cm to form a cone. The volume of the cone so formed is:
A.12 cm3
B.15 cm3
C.16 cm3
D.20 cm3
Show AnswerAnswer=Option A