Question

Each side of a square is 4 cm if the side of a square increased by 25% find increase in area

Answer 1

Answer:

Step-by-step explanation:

$\\ \\ Side_{i} = 4cm \\ \\ Area_{i} = {4}^{2} = 16{cm}^{2} \\ \\ Side_{f} = 4 + (4 \times \frac {25}{100}) = 5cm \\ \\ Area_{f} = {5}^{2} = 25{cm}^{2} \\ \\ Increase \% = \frac {Area_{f} - Area_{i}}{Area_{i}} \times 100 \\ \\ Increase \: \% = 9 \times 6.25 \\ \\ Increase \% = 56.25%$