Question

the length of a cold storage is doubled its breadth. its height is 3 metres. the area of its four walls is 180m sq . find its volume

Answer 1

here is ans to ur ques

Answer 2

AnswEr:

Let

• Length = l metres
• Breadth = b metres
• Height = h metres.

respectively. Then, l = 2b (given) and h = 3 metres.

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Now,

Area of four walls = 108 m³.

$\implies \sf \: 2(l + b)h = 108 \\ \\ \implies \sf \: 2(2b + b) \times 3 = 108 \\ \\ \implies \sf \: 18b = 108 \\ \\ \implies \sf \: b = \frac{108}{18} \\ \\ \implies \sf \: b = 6 \: m$

$\therefore$ l = 2b

l = 2 $\times$ 6

= 12 m

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Hence,

• Volume of the cold storage :

$= \sf \: (lbh) {m}^{3} = (12 \times 6 \times 3) {m}^{3} = 216 {m}^{3}$

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