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blagie [28]
2 years ago
11

In a circle, a 90° sector has area 16π ft2. What is the radius of the circle?

Mathematics
1 answer:
Veronika [31]2 years ago
7 0
Sector area  = 0.5 * r^2 * angle (in radians)

so:

16 pi = 0.5 * r^2 * (90*pi/180)

r^2 = 16 pi /(0.25 pi) = 64

r = 8


therefore it would be d
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