i need help with 7th grade math please 45 points need help ASAP + brainleist

Answer:
2.5 feet
Step-by-step explanation:
Circunference= [tex]C = \pi d[/tex]
15.7 = 3.14 · [tex]d[/tex]
[tex]\frac{15.7}{3.14}[/tex] = [tex]d[/tex]
5 = [tex]d[/tex]
And,
[tex]d = 2r[/tex]
So,
[tex]5 = 2r[/tex]
[tex]\frac{5}{2}[/tex]= r
2.5 = r
Answer:
2.5 feet
Step-by-step explanation:
Circumference = 2πr
Solving :