Question

PLEASE HELP ASAP!!

Answer 1

Answer:

C

Step-by-step explanation:

Hey There so the first step of this problem is to find the formula for circumference

$C=2\pi r$

given some of the values we can form an equation to solve for the radius (r)

$31.4=3.14(2)r\\3.14(2)=6.28\\31.4=6.28r\\\frac{31.4}{6.28} =5$

so we can conclude that the radius is equal to 5

Answer 2

Answer:

C) 5 ft

Step-by-step explanation:

Equation used: C=2πr

This isn't a hard question once you understand the basics of it. The radius squared by 2 equals the diameter, and other way around. Your going to divide the circumference by the pie (π).

31.4 ÷ 3.14 = 10

Now you'll do 10/2 to equal 5.