Question

Can someone please help me with this question?

Answer 1

Find the surface area of the sphere to the nearest square unit. Use a calculator.

Answer 2

So what's the formula for the surface area of a sphere as a function of its radius?

Answer 3

A=3.14r^2

Answer 4

No, the surface area of the sphere of radius \( r \) is
\[ 4\pi r^2 \]

Now using that formula, what is r in your problem?

Answer 5

heres the formula
Surface Area of a Sphere = 4 pi r 2

Answer 6

r in the problem is 1 ?

Answer 7

Yes, half the diameter of 2 inches, which is 1 inch.

Answer 8

so plug in r for 1 in the formula and i should get my answer ?

Answer 9

Yes.

Answer 10

so the answer is 6, am i correct ?

Answer 11

4*3.14*1

Answer 12

okay and no its not right

Answer 13

ok, so i input that formula into my calculator and im getting 3.14.

Answer 14

put inthe calculator 4*3.14*1
and then you will get your answer