Asked by Lindsay

The measurement of the edge of a cube is found to be 15 inches, with a possible error of 0.03 inch. Use differentials to approximate the maximum possible propagated error in computing the surface area of the cube.

I got 5.4 inches squared. Is this right?
Answered by Damon
Hey, I did this
Answered by Damon
30) The measurement of the edge of a cube is found to be 15 inches, with a possible error of 0.03 inch. Use differentials to approximate the maximum possible propagated error in computing the volume of the cube.
MY ANSWER: 20.25
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v = x^3
dv = 3 x^2 dx
dv = 3 (225)(.03) = 20.25 right
Answered by Damon
No, it is 20.25 like you got in the first place.
Answered by Lindsay
No, this is a different part of that same problem. It asks for the surface area this time, not volume.
Answered by Damon
Oh, sorry !
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