Question

A plate has a diameter of 4 inches . What is the area of the plate ?

Answer 1

A≈12.57in²

Explanation:

Using the formulas

A=πr2

d=2r

Solving forA

A=1/ 4πd^2=1/ 4·π·4^2≈12.56637in²

A≈12.57in²

Answer 2

12.56 inches^2

Explanation:

To solve this we use pi*r^2

Radius is diameter/2

so the equation is pi*2^2

pi*4

12.56 inches^2