Question

50 POINTS PLS DONT JUST WAIST POINTS PLEASE HELP MEEE ANSWEEERRRRR

A. 20 cm

B. 25 cm

C. 22 cm

D. 18 cm

Answer 1

Let's see

• V=πr²h
• π(8)²h=1280π
• 64h=1280
• h=1280/64
• h=20cm

Answer 2

A. 20 cm

Explanation:

Volume of a cylinder

`\textsf{V}=\sf \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}`

Given:

• 
  `\sf V=1280 \pi \: cm^3`
• 
  `\sf r=8\:cm`

Substituting the given values into the formula and solving for h:

`\begin{aligned}\implies \sf 1280 \pi & =\sf \pi 8^2h\\\\\sf 1280 \pi & = \sf 64 \pi h\\\\\sf h & = \sf (1280 \pi)/(64 \pi)\\\\ \sf h & = \sf 20\:cm\end{aligned}`