Question

the length of the cold storage is thrice its breadth. its height is 4m. the area of four walls(including doors) is 224m2. find its volume

Answer 1

hope you understand it

Answer 2

Breadth = b
Length , l = 3b
height , h = 4 m
L.S.A = 2(l+b)×h = 224 m²
 2(l+b)×h = 224 m²
2×(3b +b)×4 = 224 m²
2 × 4b × 4 = 224
4 b = 224 ÷ 8
4 b =  28
b = 28 ÷ 4
b = 7
Breadth = 7 m

Length = 3 b = 3 × 7 = 21 m

Volume = lbh
             = 21 × 7 × 4
             = 588 m³