Question

The diameter of a circle is 4 ft. Find its area in terms of \piπ.

Answer 1

Answer:

4π ft.

Step-by-step explanation:

the formula for the area of a circle is:

A = πr^2 (r is radius)

if the diameter is 4ft, then the radius is 2 ft

then you substitute the 2 in the formula

A = π2^2

A = π * 4

A = 4π

Hope this helps :)

Answer 2

Answer:

4pi

Step-by-step explanation:

area of a circle is pi*r^2

and you have diameter of 4

so 4/2 gives radius which is 2

A = pi*2^2 = 4pi