Question

the area of minor sector of a circle is 3.85 cm2 and the measure of its central angle is 36°. find the radius of the circle .
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Answer 1

Answer:

138.6 or 0.106 or 16.88 or 39.85 or -32.15

Answer 2

Answer:

R=3.5 cm

Step-by-step explanation:

Area of minor sector = 3.85cm^2

Central angle =36°

π = 22/7

Area of sector = θ/360° x πR^2

3.85 = 36°/360° x πR^2

3.85 = 1/10 x 22/7 x R^2

R^2 = 3.85x7/22 x 10/1

R^2 = 1.225 x 10

R^2 = 12.25

R = 3.5 cm