Question

if area of quadrant of a circle is 38.5 CM square then find its diameter​

Answer 1

Answer:

Area of quadrant=1/4.22/7r^2

Step-by-step explanation:

38.5=1/4.22/7.r^2

R^2=49

R=7

Answer 2

Answer:

$\frac{1}{4} \pi \times r {}^{2} = 38.5 \\ {r}^{2} = \frac{38.5 \times 4 \times 7}{22} \\ {r}^{2} = 3.5 \times 2 \times 7 = 49 \\ r = \sqrt{49} \\ r = 7 cm\\ d = 2r \\ d = 2(7) \\ d = 14 \: cm$

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