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Ostrovityanka [42]
3 years ago
11

The point A and B lie on the circumference of a circle with centre O. the area of the circle is 81πcm². The length of the major

arc is 15πcm.
Calculate:

a) The radius of the circle
b) The length of the minor arc, giving your answer in the form lπcm².
c) The acute angle​
Mathematics
1 answer:
Tomtit [17]3 years ago
6 0

Answer:

a)9cm

b)

3\pi

c)60°

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