Question

donna is making candles in the shape of a cylinder. she needs to determine how many cubic centimeters of wax she needs. use the π button or 3.14 in your computation. round your answers to the nearest tenth as needed. if the radius of each candle is 5 cm and the height of each candle is 13 cm (a) how much wax is needed for one candle? cubic cm (b) how much wax is needed for 40 candles? cubic cm

Explanation:

Step1: Recall cylinder volume formula

The volume $V$ of a cylinder is $V = \pi r^2 h$, where $r$ is radius and $h$ is height.

Step2: Calculate volume for 1 candle

Substitute $r=5$, $h=13$, $\pi=3.14$:
$V = 3.14 \times 5^2 \times 13 = 3.14 \times 25 \times 13 = 1020.5$

Step3: Calculate volume for 40 candles

Multiply single candle volume by 40:
$1020.5 \times 40 = 40820.0$

Answer:

(a) 1020.5 cubic cm
(b) 40820.0 cubic cm