Answer:
38.5 square cm
Step-by-step explanation:
Central angle of Quadrant = 90°
[tex]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} [/tex]
