Question

if the area of a quadrant of a circle is 38.5cm² then find its diameter.

Answer 1

Answer:

diameter=14cm.

Step-by-step explanation:

Area of quadrant =1/4πr^2.

38.5=1/4×22/7×r^2.

r^2=38.5×4×7/22

r^2=1078/22

r=√49

r=7cm.

diameter =2r

diameter =2×7

hence,

diameter =14cm.