Question

WORTH MANY POINTS——Please answer this I beg you please. I just need an answer. It’s ok if its wrong. Please show work. And explain how you got parts b and c. Please.

Answer 1

Part a)

Circumference formula = 2 x r x pi

Question says to replace pi with 22/7 and the radius is 14

2 x 14 x 22/7

= 88 inches

Part b)

Formula = 2pir

Questions says that they doubled 14 to get 28

= 2 x 22/7 x 28

= 176 inches

Part c)

Doubling the radius will cause the over circumference to double in answer ie. this is demonstrated above where the initial radius of 14 has doubled to 28 and the circumference of 88 has doubled to 176 inches.

Answer 2

Tip: You seem like you are slightly stuck. That is okay! Don't forget the formulas that can help you solve for the circumference. When you can solve for the circumference, the rest of the answers come a bit easier.

[a] 88 inches

The circumference can be found with C = 2πr, but they tell us to use
`(22)/(7)` instead of pi, so we will do just that.

C = 2 *
`(22)/(7)` * r

C = 2 *
`(22)/(7)` * (14)

C = 88

[b] 176 inches

Again, the circumference can be found with C = 2πr, but they tell us to use
`(22)/(7)` instead of pi, so we will do just that.

C = 2 *
`(22)/(7)` * r

C = 2 *
`(22)/(7)` * (28)

C = 176

[c] When you double the radius, the circumference also doubles.

We will divide the second circumference by the first circumference so we can see how they compare:

176 / 88 = 2

Now we will take the second radius divided by the first radius:

28 / 14 = 2

We could use a longer explanation, but in summary, when the radius is doubled the circumference is also doubled as seen with the value 2.