Question

if the perimeter of a semi-circular protector is 66cm, the diameter of the protector is:​

Answer 1

Answer:

Step-by-step explanation:

Let the radius of protractor be X

The perimeter =pixX + 2xX

=X(pi + 2) = 66cm

X(3.14 + 2)=66cm

X= 66/5.14

X=12.8

Since, diameter = 2X = 25.6 cm

Hope it help you!