Question

Exercise 18.4
1. The surface area of a cube is 384 cm2. Find
(i) the length of an edge
Find the
(ii) volume of the cube
lindor of radius 5 cm a
1​

Answer 1

Answer:

1) surface area = 384 CM sq.

surface area = 6a sq.

384 = 6a ^2

384/6 = a^2

64 = a^2

a^2 = 8^2

a = 8

so, length = 8 cm