The length and breadth of a cuboidal store are in the ratio 2 : 1 and its height is 3.5 metres. If the area of its four walls (including doors) is 210 m2, then its volume is ____.
Answer & explanation
Correct answer: option 2
We know that,
Area of four wall = 2 (l + b) × h
The ratio of length and breadth = 2a : a
Height of the cuboidal store h = 3.5
According to the question,
2 (2a + a) × 3.5 = 210
3a = 30
x = \(\frac{30}{2}\) = 10
Volume of cuboidal store = 2a × a × 3.5 = 2 × 10 × 10 × 3.5 = 700