Mathematics: Asphere has a diameter of 12 ft. what is the surface area of the sphere? express the answer in terms of pi. recall the formula sa=4 pi r^2. pi ft^2

I think the answer is graph B...

Asphere has a diameter of 12 ft. what is the surface - id12250642, veronicatrejoaguiler

manuellopez1981

10.03.2022

$SA=144\pi\ ft^2$

Step-by-step explanation:

We know that the diameter of the sphere is 12 feet.

By definition the radius of the sphere is:

$r =\frac{d}{2}$

Where d is the diameter of the sphere

Then

$r =\frac{12}{2}$

$r =6\ ft$

Now we calculate the surface area of the sphere using the formula

$SA=4\pi r^2$

$SA=4\pi (6)^2$

$SA=4\pi(36)$

$SA=144\pi\ ft^2$

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