Question

calculate the area of a quadrant of 7cm radius​

Answer 1

Answer:

38.5 square cm

Step-by-step explanation:

Central angle of Quadrant = 90°

$area \: of \: quadrant = \frac{90 \degree}{360 \degree} \times \pi {r}^{2} \\ \\ = \frac{1}{4} \times \frac{22}{7} \times {7}^{2} \\ \\ = \frac{1}{4} \times 22 \times {7} \\ \\ = \frac{77}{2} \\ \\ = 38.5 \: {cm}^{2}$