## heather040200 Group Title Help! I give medals:) Pic below find the height and surface area of the right circular cylinder with the height equal to the diameter. Show work one year ago one year ago

1. heather040200

Height=2r Volume-128pic

2. nickersia

Surface area of a circle is $r ^{2} \pi$ Volume is surface area of a circle multiplied by height. So, 128 = 2r * r (squared)*P

3. heather040200

how do I solve for r?

4. nickersia

$r ^{2}\pi * 2r = 182$ $r ^{3}\pi=64$ $r = \sqrt[3]{20.37}$ r=2.73

5. heather040200

OOh ok LOL Thank You so much :)

6. nickersia

Numbers are weird, but that's the only way I see how it's done :)

7. heather040200

as long as the answer n work r right that's all that matter in math LOL