Question

A candelabra holds 5 identical cylindrical candles, each with a diameter of 6 centimeters and a height of 9 centimeters. How many cubic centimeters of wax are in all the candles on the candelabra combined?

Answer 1

Answer: $1272.51\ cm^3$

Step-by-step explanation:

Given

diameter of each candle is $d=6\ cm$

The height of each candle is  $h=9\ cm$

The volume of a cylinder is $V=\pi r^2h$

The volume of each candle is

$\Rightarrow V=\pi \times 3^2\times 9\\\Rightarrow V=254.502\ cm^3$

For 5 candles it is

$\Rightarrow 5V=1272.51\ cm^3$

Total wax used for 5 candles is $1272.51\ cm^3$