Question

Calculate the area of a quadrant of 7cm radius​

Answer 1

38.5 square cm

Explanation:

Central angle of Quadrant = 90°

`area \: of \: quadrant = (90 \degree)/(360 \degree) * \pi {r}^(2) \\ \\ = (1)/(4) * (22)/(7) * {7}^(2) \\ \\ = (1)/(4) * 22 * {7} \\ \\ = (77)/(2) \\ \\ = 38.5 \: {cm}^(2)`