Volume And Surface Area MCQs

A. 1.4
B. 1.5
C. 1.7
D. 1.9

Correct Answer: B. 1.5 ✔

A. 1.4 m
B. 2.8 m
C. 14 m
D. None of these

Correct Answer: D. None of these ✔

A. 12 kg
B. 60 kg
C. 72 kg
D. 96 kg

Volume of water displaced = (3 X 2 X 0.01) m³ = 0.06 m³.
Mass of man = Volume of water displaced X Density of water
= (0.06 X 1000) kg = 60 kg.

Correct Answer: B. 60 kg ✔

A. the volume of the box
B. twice the volume of the box
C. the square of the volume of the box
D. the cube root of the volume of the box

Let length = 1, breadth = b and height = h. Then,
Product of areas of 3 adjacent faces = (lb x bh x 1h) = (lbh)² = (Volume)².

Correct Answer: C. the square of the volume of the box ✔

A. 24 cm³
B. 48 cm³
C. 64 cm³
D. 120 cm³

Let the dimensions of the cuboid be x, 2x and 3x.
Then, 2 (x X 2x + 2x X 3x + x X 3x) = 88
⇔ 2X2 6X2 + 3X2 = 44 ⇔ 11X2 = 44 ⇔ X2 = 4 ⇔ x = 2.
Volume of the Cuboid = (2 X 4 X 6) cm3 = 48 cm³.

Correct Answer: B. 48 cm³ ✔

A. 8
B. 16
C. 27
D. 64

Correct Answer: D. 64 ✔

A. 6
B. 9
C. 24
D. 30

Volume of block = (6 X 9 X 12) cm³ = 648 cm³.
Side of largest cube = H.C.F. of 6 cm, 9 cm, 12 cm = 3 cm.
Volume of this cube = (3 X 3 X 3) = 27 cm³.
Number of cubes = 648/27 = 24.

Correct Answer: C. 24 ✔