Question

if the side of a square be increased by 50%, find the percent increase in area

Answer 1

let the side of a square be x

A(square) = x^2

if x is raised to 50 %

A(square) =(x + 50x\100) ^2

= x+x\2

$( \frac{2x + x}{2} ) {}^{2} \\ ( \frac{3x}{2} ) {}^{2} \\ \frac{9 {x}^{2} }{4}$

Answer 2

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