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September 21, 2014

September 21, 2014

Posted by **Adeola** on Friday, June 18, 2010 at 5:43pm.

- Calculus -
**Damon**, Friday, June 18, 2010 at 7:41pmhalf a liter

liter is 10*10*10 = 1,000 cm^3

a = 2(pi r^2) + 2 pi r h

v = pi r^2 h =500

so

h = 500/(pi r^2)

a = 2 pi r^2 + 1000/r

da/dr = 0 = 4 pi r - 1000/r^2

pi r = 500/r^2

pi r^3 = 500

r^3 = 500/pi

r = 5.4 cm

h = 5.4 cm

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