Question

Part F

Find the circumference of the wheel using the formula you found in part E.
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Activity
A vintage wheel needs to be banded with an iron strip. If the wheel’s radius is 11 inches, how long must the iron strip be to go all the way around the wheel? Complete the steps below to answer the question.

Answer 1

69.08 inches

Explanation:

substitute the values of r (11 inches) and pi (3.14) in the formula c = 2πr to find c:

c = 2 × 3.14 × 11 inches

c = 69.08 inches.

the circumference of the wheel is about 69.08 inches.

Answer 2

Explanation:

first lets find the circumference of the wheel:

`C=\pi *d`

we have to find the diameter out of the radius:

`d=r*2`

because the radius is half of the diameter, intrhis case i have to findf the diameter so i do multiply it with 2:

`r=11\\d=??\\d=11*2\\d=22`

we found the diameter now we are going to find the circumference :

`C=\pi *d\\C=\ 3.14*22\\C= 69.08`

Another way (easier)to find the circumference is:

`C=2\pi *r\\C=2(3.14)*11\\C=69.08`

At the end it will hav ethe same answer.