Question

The diameter of a semi circular protractor is 7cm
Find its perimeter.​

Answer 1

2r=7⇒r=

2

7

cm

AB+AB=(

7

22

×

2

7

+7)cm

=18cm

Answer 2

Perimeter of semi-circular protractor = 11 cm

Step-by-step explanation:

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Please see the detailed answer in picture.

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