Question

the formula for the volume of a cylinder is $pi r^{2}h$. use 3.14 as an approximation of $pi$. what is the approximate volume of the cylinder? a. $47.1 cm^{3}$ b. $94.2 cm^{3}$ c. $141.3 cm^{3}$ d. $235.5 cm^{3}$

Explanation:

Step1: Identify values

$r = 3$ cm, $h=5$ cm, $\pi\approx3.14$

Step2: Substitute into formula

$V=\pi r^{2}h\approx3.14\times3^{2}\times5$

Step3: Calculate

$3^{2}=9$, then $3.14\times9\times5 = 3.14\times45=141.3$ $cm^{3}$

Answer:

C. $141.3$ $cm^{3}$