Mensuration Practice Test 4

Question : 10 of 40

Marks: +1, -0

The length of a hall is 20 m and the width is 16 m. The sum of the areas of the floor and the roof is equal to the sum of the areas of four walls. The volume of the hall is approximately:

2,840.4 $m^3$
2,846.2. $m^3$
2,844.4 $m^3$
2,845.3 $m^3$

Validate

Solution:

Area of floor + Roof = 2 (20 × 16) = 640
Area of 4 walls = 640
2(L + B) × H = 640
2(20 +16)× 4 = 640
H =

{80}/9

Volume of the room = L × B × H
= 20 × 16 ×

{80}/9

= 2844.4

m^3

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