Question

The length of a cold storage is double its breadth. Its height is 3m. The area of its four walls is 168m^2. Then its total surface area is

a) 242m^2

c) 252m^2

b) 258m^2

d) 254m^2​

Answer 1

Answer:

Given,

l=2b and h=3 m

Now, Area of four walls = 108 m³

2(l+b)h=108

18b=108

b=6 m

Therefore, l=2b=12 m

Hence, volume of the cold storage =

lbh=12×6×3=216 m³