Question

(0
(1) Find the surface area of the cubes whose
dimensions are :
(a) 7 cm
(6) 10 m
(ICSE​

Answer 1

Given :-

Dimension of (a) = 7 cm

Dimension of (b) = 10 cm

To Find :-

The surface area of (a).

The surface area of (b).

Solution :-

We know that,

• a = Side
• TSA = Total Surface Area

(a) Given, dimension = 7 cm

TSA = 6a²

TSA = 6(7)²

TSA = 6 × 7 × 7

TSA = 6 × 49

TSA = 294 cm

Therefore, the total surface area of (a) is 294 cm³.

(b) Given, dimension = 10 cm

TSA = 6a²

TSA = 6(10)²

TSA = 6 × 10 × 10

TSA = 6 × 100

TSA = 600 cm³

Therefore, the total surface area of (b) is 600 cm³.