Question

If area of quadrant of a circle is 38.5cm,then find diameter

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

14cm

Step-by-step explanation:

$area \: of \: quadrant \: of \: circle = \frac{\pi {r}^{2} }{4} \\ \\ \\ 38.5 = \frac{\pi \times {r}^{2} }{4} \\ \\ \\ \frac{38.5 \times 4}{\pi} = {r}^{2} \\ \\ \\ \\ \\ {r}^{2} = \frac{38.5 \times 4 \times 7}{22} \\ \\ {r}^{2} = 49 \\ \\ r = \sqrt{49} \\ \\ r = 7 \\ \\ diameter = 2 \times r\\ \\ d = 2 \times 7 = 14cm$