Question

12 8 cm What is the surface area of the solid? Be sure to give both an exact answer as well as an approximate answer rounded to the nearest tenth. Use 3.14 for and use the appropriate units in both answers,

Answer 1

The solid shape is a SPHERE.

And the surface area of a sphere is given as;

$A_{sphere}=4\pi\times r^2$

Given the radius r, of the circle as 8cm and pie = 3.14;

$\begin{gathered} A_{sphere}=4\times3.14\times8^2 \\ A_{sphere}=4\times3.14\times64 \\ A_{sphere}=803.84\operatorname{cm}^2 \end{gathered}$

The area of the sphere is 803.84 square centimeters

But to the nearest tenth, the area of the sphere 803.8 square centimeters