A spherical tree ornament is to be painted in bright colors. If the ornament has a diameter of 4 cm, how much paint is needed?

Answer 1

The surface area of a sphere is
4πr² where r=4/2=2 cm, π=3.1416.
surface area = 4πr²=?

Answer 2

A sphere has a surface area of 4d^2 where d is the diameter. Calculate the area. You need to know how much area the paint you are using covers before you will know the quantity of paint needed.

Answer 3

My eyes are playing tricks on me. I misread pi as 4 when I looked up the formula. The surface area of a sphere is pi*d^2 (the same as 4*pi*r^2). But you still don't know how much paint is needed until you know the area the paint will cover.

Answer 4

ok thank you that is all i needed to know i will then post what I got and please let me kow if I got it correct.