The diameter of a nickel is 21 millimeters. Find the circumference of a nickel to the nearest millimeter.

66 millimeters

Step-by-step explanation:

Well, to find the circumference of something, you have to multiply the diameter by pi, which is 3.14. this will give you 6.9 and a lot of other numbers. Round it up and you get 66

Radius=diameter/2=21/2=10.50mm

Circumference=2*pi*r=2*3.14*10.50=65.94

Rounding to the nearest millimeter, circumference= 66 mm

Step-by-step explanation:

tip $2.90

total $17.40

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.