Question

the diameter d of a sphere is 8.8 m. calculate the spheres surface area a. use the value 3.14 for π, and round your answer to the nearest tenth. a=□m²

Explanation:

Step1: Find the radius

The radius \( r=\frac{D}{2} \). Given \( D = 8.8\) m, so \( r=\frac{8.8}{2}=4.4\) m.

Step2: Use the surface - area formula for a sphere

The formula for the surface area of a sphere is \( A = 4\pi r^{2}\). Substitute \( r = 4.4\) m and \(\pi=3.14\) into the formula:

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Step3: Round the result

Round \(243.1616\) to the nearest tenth. The digit in the hundredth place is \(6\), so we round up the digit in the tenth place. \(243.1616\approx243.2\)

Answer:

\(243.2\)