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 point)

Responses

1,063.08 in.2
1
,
063.08

in.
2
1,063.08 inches squared

84.64 in.2
84.64

in.
2
84.64 inches squared

265.77 in.2
265.77

in.
2
265.77 inches squared

66.44 in.2

1 answer

To find the surface area of a sphere, we can use the formula:

\[ \text{Surface Area} = 4 \pi r^2 \]

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

First, we need to calculate the radius of the basketball. The diameter is given as 9.2 inches, so the radius \( r \) is half of that:

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

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

\[ \text{Surface Area} = 4 \times 3.14 \times (4.6)^2 \]

Calculating \( (4.6)^2 \):

\[ (4.6)^2 = 21.16 \]

Now substituting this value into the surface area formula:

\[ \text{Surface Area} = 4 \times 3.14 \times 21.16 \]

Calculating \( 4 \times 3.14 \):

\[ 4 \times 3.14 = 12.56 \]

Now multiply by \( 21.16 \):

\[ \text{Surface Area} = 12.56 \times 21.16 \approx 266.6896 \]

Rounding this to the nearest hundredth gives:

\[ \text{Surface Area} \approx 266.69 \text{ in}^2 \]

Looking at the options provided, it seems that the closest approximation to our calculated surface area, rounded correctly and considering what was provided in the choices, would be:

265.77 in.²

So the correct answer is 265.77 inches squared.