Question

A.4 B.5 C.6 D.8
HELP PLEASE

Answer 1

• A) The radius is 4 m

Explanation:

Volume of cylinder formula:

• V = πr²h

Given

• V = 64π,
• h = 4 m

Find r by substituting given values:

• 64π = πr²*4
• 64π = 4r²π
• 16 = r²
• r = √16
• r = 4 m

Correct choice is A.

Answer 2

radius, r = 4 meters

Volume of cylinder:

• 
  `\sf V = \pi (radius)^2 (height)`

Here provided with:

• radius = ?
• height = 4 m
• volume = 64π

Substituting these values in the formula:

`\sf \rightarrow \pi (r)^2 (4) = 64\pi`

`\sf \rightarrow 4\pi (r)^2 = 64\pi`

`\sf \rightarrow r^2 = 64\pi /4\pi`

`\sf \rightarrow r^2 =16`

`\sf \rightarrow r=√(16) = 4`