Question

the length breadth and height of a room are 10cm ,7cm,and 5cm respectively then the total area of four walls

Answer 1

Given:

• Length =10cm
• Breadth = 7cm
• Height = 5cm

To find:

   The total area of four walls.

Step-by-step explanation:

We know, the formula for the total area of four walls of cuboid is 2(l + b) × h where:

• l is length of cuboid
• b is breadth of cuboid
• h is height of cuboid

2(l + b) × h

We'll put value of l, b and h in the above formula

2(10 + 7) × 5

(20 + 7) × 5

27 × 5

135

So, the  the total area of four walls of cuboid is 135 cm².