Mensuration Practice Test 10

Question : 25 of 40

Marks: +1, -0

The area of a hall whose length is 7.5 m and breadth is 3.5 m. The area of four wall is 77 m sq. Find the height of the room.

Solution:

Area of the four walls of a room = 2 (l + b) m
77 = 2(7.5 + 3.5)h
77 = 22 × h

{77}/{22}

= h
Height = 3.5 m

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