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Homework Statement
The circumference of a sphere was measured to be 90 cm with a possible error of 0.5 cm. Use differentials to estimate the maximum error in the calculated volume.
Homework Equations
Volume of sphere: V=4/3πR3
Circumference of Sphere: C=2πR
ΔC = 0.5 cm
The Attempt at a Solution
Stating R in terms of C:
R=C/2π
Inserting this new term into the volume equation:
V=4/3π(C/2π)3
Now, before taking the derivative of both sides, I went ahead and expanded the right side:
V=C3/6π2
Then, the derivative of both sides:
dV/dC = C3/2π2(dC)
Now, is dC = ΔC? I'm not quite sure what to do next.