i hope as per image it will be clear for you
(1/2*x)^2 + x^2 = (20)^2
so 5/4 * (x^2) = 400 hence, x^2 = 320 which is what we want.
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Source: Beat The GMAT — Problem Solving |
i hope as per image it will be clear for you
(1/2*x)^2 + x^2 = (20)^2
so 5/4 * (x^2) = 400 hence, x^2 = 320 which is what we want.
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