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The length of a room is twice its breadt...

The length of a room is twice its breadth. If the area of the room is 242 sq. metres, find out its breadth.

A

a)11 m

B

b)10 m

C

c)12 m

D

d)9 m

Text Solution

Verified by Experts

The correct Answer is:
A
Suppose the breadth of the room b x metres
`:.` Length =2x
According to question.
`2x xx x=242`
or, `2^(2)=242`
or `x^(2)=(242)/(2)=121`
`:.x= sqrt(121)=11`
Breadth =11 metres
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