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leva [86]
3 years ago
13

Find the area of a sector with central angel 3pi/2 in a circle with radius 5?

Mathematics
1 answer:
Valentin [98]3 years ago
6 0
Find area of circle
A=pir^2
A=pi5^2
A=25pi


then find how much the central angle is
whole circle is 2pi radians

(3pi/2)/2pi=3pi/4pi=3/4

it is 3/4 of whole area
area=25pi units^2
3/4 times 25pi=75/4pi units^2=
18 and 3/4 pi square units=
18.75ip square units

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