Question

Area of 4 walls of a cuboid 400sq cm, it's length is 15cm and height is 8cm. What is its breadth in cm

Answer 1

Area of four walls =400
2h(l+b)=40
2(8)(15+b)=400
b=10 cm

Answer 2

The breadth of the cuboid is "10 cm".

Step-by-step explanation:

Given,

Area of 4 walls of a cuboid = 400 $cm^{2}$, and length(l) = 15 cm and

height(h) = 8 cm

To fing, the breadth(b) = ?

We know that,

Area of 4 walls of a cuboid =$2(l + b)\times h$

⇒$2(15 + b)\times 8 = 400$

⇒ $15 + b = \dfrac{400}{16} =25$

⇒ b = 25 - 15 = 10 cm

Hence, the breadth of the cuboid is "10 cm".