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A donut machine makes small glaze donuts the diameter of each doughnut is 8 cm. What is the circumference of each doughnut created ?Round to the nearest hundredth.

User Berly
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1 Answer

5 votes

Answer:

50.29 cm

Explanation:

Given:

Diameter of each doughnut = 8 cm

To find: circumference of each doughnut

Solution:

Circumference refers to the boundary of a geometric figure.

A doughnut has the shape of a circle.

Let r represents the radius of the circle.

Diameter of each doughnut = 8 cm

Radius of each doughnut (r) = Diameter/2


=(8)/(2)\\ =4 \,\,cm

Circumference of each doughnut
=\pi r^2\\

Put
r=4\,\,,\pi=(22)/(7)

So, circumference =
=(22)/(7) (4)^2


=(352)/(7) \,\,cm\\=50.29\,\,cm