Mensuration Practice Test 3

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Question : 33 of 40

Marks: +1, -0

A square room is surrounded by a verandah of width 2 m. The area of the verandah is 81 sq. m. Find the area of the room.

65 sq. m
64 sq. m
66 sq. m
62 sq. m

Solution:

The area of the room =

({A-4d^2}/{4d}) m

A = 81, d = 2
=

({81-4×2^2}/{4×2})^2

sq. m
=

({81-16}/8)^2

=

({65}/8)^2

= 66.89 m

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