Question

How to Calculate the perimeter of a 3quarter of a circle with radius 4cm

Answer 1

$$Perimeter=\dfrac{3}{4}(2\pi r)$$

$$Perimeter=\dfrac{3}{4}(2\pi (4))=6\pi(cm)$$

The perimeter of a 3quarter of a circle with radius 4cm is $6\pi$ cm.