Question

the perimeter of a semicircular protractor is 108 cm find the diameter of the protractor

Answer 1

Answer:

Step-by-step explanation:

Perimeter of the circle=2πr

Perimeter of the semicircle=πr

108=πr

r=108/17

Diameter (2r)=2×108/π

Diameter=216/π

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Answer 2

Answer:

approx...69.44

Step-by-step explanation:

given, perimeter of semicircular protractor=108cm

perimeter of semicircle=pi*r

22/7*r=108

r=108*7/22

r=34.72cm

diameter=2*radius

=2*34.72

=69.44cm