Question

Instructions: Find the surface area of each figure Round your answers to the nearest tenth, if necessary n 4 cm. 1 cm. Surface Area: 1cm²

Answer 1

Answer:

37.7cm²​

Explanation:

The surface area of a cylinder is calculated using the formula below:

$SA=2\pi r(r+h)$

From the given figure:

• The height of the cylinder = 1cm

,

• The radius of the cylinder = 4/2 = 2cm

Therefore:

$\begin{gathered} SA=2\times\pi\times2(2+1) \\ =4\times3\times\pi \\ =12\times\frac{22}{7} \\ =37.7\operatorname{cm}^2 \end{gathered}$

The surface area is 37.7cm²​ (to the nearest tenth).