Question

6. Describe how the two figures at the right are alike and how they are different. Which
box has larger lateral surface area?​

Answer 1

Class - 8

Exercise 11.3

Ques. 6

.Solution:

The two figures given are cylinder and cube.

Both figures are alike in respect of their same height.

Cylinder: d = 1 cm, h = 7 cm

Cube: Length of each side a = 7 cm

Both of the figures are different in respect of their shapes.

Lateral surface of cylinder = 2πrh

= 2 × 227 × 72 × 7 = 154 cm2

Lateral surface of the cube = 4l2 = 4 × (7)2 = 4 × 49 = 196

So, cube has the larger lateral surface = 196 cm2.