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The radius of a circle is 3 inches. What is the area of a sector bounded by a 54º arc?

r=3 in
540
Give the exact answer in simplest form.
square inches

The radius of a circle is 3 inches. What is the area of a sector bounded by a 54º arc-example-1
User Kratenko
by
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1 Answer

9 votes
Answer = 27/20 pi


Find the area of the arc with the equation:

Area = pi x radius^2 x angle/360

(Multiply the angle/360 with the regular area of a circle formula to find the area of that specific section only (the arc))

The radius is given as 3 in.

The angle the arc makes is 54 degrees.


By substituting the given values into the equation:

Area = pi x 3^2 x 54/360

Area = 27/20 pi

They want the exact answer, so the answer is 27/20 pi, no need to put it into a fully numerical form.
User Kenny Grant
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3.2k points