Use the formula for the surface area of a sphere to find the surface area of a basketball that has a diameter of 9.2 inches. Use 3.14 pi and round your answer to the nearest hundredth, if necessary.(

1 answer

The formula for the surface area (SA) of a sphere is given by:

\[ SA = 4\pi r^2 \]

where \( r \) is the radius of the sphere.

To find the radius of the basketball, we first need to calculate it from the diameter:

\[ \text{Diameter} = 9.2 \text{ inches} \] \[ r = \frac{\text{Diameter}}{2} = \frac{9.2}{2} = 4.6 \text{ inches} \]

Now, we can substitute the radius into the surface area formula. Using \( \pi \approx 3.14 \):

\[ SA = 4 \times 3.14 \times (4.6)^2 \]

Calculating \( (4.6)^2 \):

\[ (4.6)^2 = 21.16 \]

Now, substituting back into the surface area formula:

\[ SA = 4 \times 3.14 \times 21.16 \]

Calculating \( 4 \times 3.14 \):

\[ 4 \times 3.14 = 12.56 \]

Now, multiplying by \( 21.16 \):

\[ SA = 12.56 \times 21.16 \approx 266.7056 \]

Rounding to the nearest hundredth, the surface area of the basketball is:

\[ \text{Surface Area} \approx 266.71 \text{ square inches} \]

So, the final answer is:

\[ \boxed{266.71} \text{ square inches} \]