Question

Three pizzerias claim they offer the pizza with the largest circumference.

Answer 1

 the correct order is:
Mario's, Peter's, Tito's
Hope that helps

Answer 2

Mario's:

8 * 14.13 = 113.04

A = pi * r^2

Plug in what we know:

113.04 = 3.14 * r^2

Divide 3.14 to both sides:

36 = r^2

Find the square root of both sides:

r = 6

Plug this into the formula for the Circumference of a Circle:

C = 2 * pi * r

C = 2 * 3.14 * 6

Multiply:

C = 37.68

Tito's:

16 * 12.56 = 200.96

A = pi * r^2

Plug in what we know:

200.96 = 3.14 * r^2

Divide 3.14 to both sides:

64 = r^2

Find the square root of both sides:

r = 8

Plug this into the formula for the Circumference of a Circle:

C = 2 * pi * r

C = 2 * 3.14 * 8

Multiply:

C = 50.24

Peter's:

10 * 15.386 = 153.86

A = pi * r^2

Plug in what we know:

153.86 = 3.14 * r^2

Divide 3.14 to both sides:

49 = r^2

Find the square root of both sides:

r = 7

Plug this into the formula for the Circumference of a Circle:

C = 2 * pi * r

C = 2 * 3.14 * 7

Multiply:

C = 43.96

So the correct order is:

Mario's, Peter's, Tito's