Question

question 2
the volume of a cylinder with radius r and height h is given by the formula v = πr²h. find the volume of a cylinder with radius 30 cm and height 21 cm.
answer: cm³
use the π key on your calculator. round your answer to the nearest tenth.

Explanation:

Step1: Substitute values into formula

$V=\pi\times(30)^2\times21$

Step2: Calculate $(30)^2$

$(30)^2 = 900$, so $V=\pi\times900\times21$

Step3: Multiply 900 and 21

$900\times21 = 18900$, so $V = 18900\pi$

Step4: Use $\pi$ key and round

Using the $\pi$ key on calculator, $V\approx18900\times3.14159\approx59376.051\approx59376.1$

Answer:

$59376.1$