Homework Help: calculus

Posted by john on Friday, October 14, 2011 at 12:51am.

Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint cm thick to a hemispherical dome with a diameter of meters.

calculus - MathMate, Friday, October 14, 2011 at 6:00pm
Without using calculus:
Amount of paint
=surface area * thickness of paint(t)
=4πr²*t

Make sure you put everything in the right units (probably cm).

Using calculus:
V=4πr³/3
dV/dr=4πr²t

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