Question

the diameter d of a sphere is 11 m. calculate the spheres surface area a. use the value 3.14 for π, and round your answer to the nearest tenth.

Explanation:

Step1: Find the radius

The radius \( r \) of a sphere is half of the diameter. Given \( D = 11\) m, so \( r=\frac{D}{2}=\frac{11}{2}=5.5\) m.

Step2: Use the surface - area formula

The formula for the surface area of a sphere is \( A = 4\pi r^{2}\). Substitute \( r = 5.5\) m and \( \pi=3.14\) into the formula:

$$
LATEXBLOCK0
$$

Answer:

\(380.2\)