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 inches squared

265.77 inches squared

84.64 inches squared

66.44 in.2

1 answer

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

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

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

Given that the diameter of the basketball is 9.2 inches, we can find the radius:

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

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

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

Calculating \( (4.6)^2 \):

\[ (4.6)^2 = 21.16 \]

Now substitute this into the surface area formula:

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

Calculating this step-by-step:

  1. Multiply \( 3.14 \times 21.16 \):

\[ 3.14 \times 21.16 = 66.4754 \]

  1. Multiply by \( 4 \):

\[ 4 \times 66.4754 = 265.9016 \]

Now, rounding to the nearest hundredth, we get:

\[ \text{Surface Area} \approx 265.90 \text{ inches squared} \]

Among the given options, the closest response is:

265.77 inches squared.