the length of room is twice its breadth. if the area is 242 square meters then find out it's breadth
a) 11
b) 10
c) 12
d) 9
show ur workings?

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  1. Multiply each breadth by twice the breadth.

    For instance, 9 * 18 = 162
    Nope -- that's not the answer.

  2. width --- x
    length --- 2x
    x(2x) = 242
    2x^2 = 242
    x^2 = 121
    carry on, what is the square root of 121 ?

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    posted by Reiny

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