Question

If area of quadrant of a circle is 38.5 cm2, then find its diameter​

Answer 1

Answer:

diameter = 14

Step-by-step explanation:

we know that, area of sector = theta/360 × pi × r^2

here theta = 90° ( since it is a quadrant)

area of quadrant = (90°/360°) × pi × r^2

38.5= 1/4 × pi × r^2

38.5 × 4 = 3.14 × r^2

154 = 3.14 × r^2

r^2 = 154/ 3.14

r^2= 49 ( approx)

r^2 = 7^2

r= 7

d= 2r

d= 2× 7

d=14

hope it helps

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Answer 2

Please find the picture attached.

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