Mensuration Practice Test 1

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Question : 19 of 40

Marks: +1, -0

A square room is surrounded by a verandah of area 24 sq. m and width 1 m all around it and its inside. Find the area of the room.

25 sq. m
49.59 sq. m
45.20 sq. m
50.43 sq. m

Solution:

The area of the room =

({A+4d^2}/{4d})

A = 24, d = 1
=

({24+4×1^2}/{4×1})

=

({24+4}/4)^2

=

({28}/4)^2

=

7^2

= 49.59 m

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