Question

5. . Find the surface area of each object to the a nearest tenth of a square unit. d=0.003 m b) су fa a) d=2.5 cm 16 cm re wooden rod 16 m flag pole

Answer 1

The flag pole is a cylinder, the surface area of the cylinder is given by:

`SA=2\pi r^2+2\pi rh`

Where:

`\begin{gathered} r=(d)/(2)=(0.003)/(2)=0.0015m \\ h=16m \end{gathered}`

Therefore:

`\begin{gathered} SA=2\pi\cdot(0.0015)^2+2\pi(0.0015)(16) \\ SA\approx0.2m^2 \end{gathered}`

Answer:

0.2 m²