Question

Trent Ordered a pizza. The circumference of the pizza is 25.12 inches. The radius of the pizza is 4 inches, trent understands that pi is the ratio of the circumference compared to the diameter. So trent says that pi =23.12/4, is he correct, explain your work

Answer 1

Trent is wrong.

This is because:

π = 25.12/2 × 5

π = 25.12/8

Explanation:

A pizza is circular is shape, the formula for the circumference of a circle is :

C = 2× π × r

Making π the subject of the formula

π = C/2r

The circumference of the pizza is 25.12 inches. The radius of the pizza is 4 inches,

Hence:

π = 25.12 inches/ 2 × 4 inches

π = 25.12/8

From the calculation above, Trent is wrong.