1 Answer

Greg Smalter · Answer 1 · 2022-11-10T20:32:38+0000

Answer:
$52\ cm,\ 176.55\ cm^2$

Explanation:

Given

The cylinder is 20 cm high

The radius of the cylinder is
$r=3\ cm$

The total area of the figure is the sum of the rectangle and two circles

$\Rightarrow \text{Perimeter P=}2[h+2r]\\\Rightarrow P=2[20+6]\\\Rightarrow P=52\ cm$

The total area of the figure is

$\Rightarrow \text{Area A=}h* 2r+2\pi r^2\\\Rightarrow A=20* 6+2* \pi * 3^2\\\Rightarrow A=120+18\pi\\\Rightarrow A=176.55\ cm^2$

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