Question

A rectangle has dimension 40m into 25m. if the length and breadth are increased by 15 %, find the percentage increase in its area.

Answer 1

$area = 40 \times 25 = 1000 \: {m}^{2} \\ after \: \: increase \\ length = 40 \times 1.15 = 46 \\ breadth = 25 \times 1.15 = 28.75 \\ new \: \: area = 46 \times 28.75 = 1322.5 \: {m}^{2} \\ \% \: increase \: \: in \: \: area \\ = \frac{1322.5 - 1000}{1000} \times 100 = 32.25 \: \%$

Answer 2

Answer:

32 1/4

Step-by-step explanation:

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