2016
Mathematics
67ca00ce0c643c71d77dee1f
Calculate the perimeter of a sector of a circle of raduis 9cm and angle 36o.
A.
18cm
B.
(18 + 9π/5)cm
C.
(9 + 9π/5)cm
D.
9π/5cm
Correct Answer: (18 + 9π/5)cm
Explanation
Perimeter = 2r + θ/360 x 2πr 2(9) + 36/360 x 2 x π x 9 = 18 + 9π/5
Perimeter = 2r + θ/360 x 2πr 2(9) + 36/360 x 2 x π x 9 = 18 + 9π/5THIS WEEK's
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