Question

I need the answer for question 1 please help

Answer 1

Answer:

A. $h= \frac{355}{\pi r^2}$

Step-by-step explanation:

Given:

Volume of cylinder = $355 cm^3$

The volume of cylinder is given by :

$V=\pi r^2h$

where $V$ represents volume,$r$ represents radius and $h$ represents height of cylinder.

The cylinder is being redesigned by a package designer who keeps the volume constant st $355 cm^3$ and rearranges the formula to give height in terms of radius.

$\pi r^2h=355$      [ Substituting $V=355 cm^3$]

Dividing both sides by $\pi r^2$.

$\frac{\pi r^2h}{\pi r^2}=\frac{355}{\pi r^2}\\\\h= \frac{355}{\pi r^2}$