Question

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

• A. (a) 720
• B. (b) 900
• C. (c) 1200
• D. (d) 1800

Answer 1

The correct option is C

(c) 1200

Ans 78 C

2(5+12)*h =2 (15*12)
h = (180/27)=(20/3)m
volume = (15*12*20) = 1200 m3