Volumes Practice Test 4

Question : 15 of 16

Marks: +1, -0

A hall is 15m long and 12m broad. If the sum of the areas of the floor and ceiling is equal to the sum of areas of the four walls, then find the volume of the hall.

900 $m^3$
1000 $m^3$
1200 $m^3$
1500 $m^3$

Validate

Solution:

Here, 2h(l + b) = 2lb
⇒ h (15 + 12) = 15 × 12
∴ h =

{15×12}/{27}

{20}/3

m
Hence, volume of the hall = 15 × 12 ×

{20}/3

= 1200

m^3

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