Math, asked by chahaksharma21, 1 day ago

the perimeter of a semicircular protractor whose radius 'r' is?​

Answers

Answered by Anonymous
15

Step-by-step explanation:

Correct answer is: πr + 2r

Perimeter of protractor = Circumference of semi-circle + 2 x radius

= πr + 2r

Answered by lilicutie47
1

Step-by-step explanation:

We must know the formula of the perimeter of a circle that is 2πr and for the semi-circle, we have to divide the perimeter of the circle by 2. So, the perimeter of the semicircular protractor is πr

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