CAL
posted by tony .
THe circumference of a sphere was measured to be 74.000 cm with a possible error of 0.50000 cm. Use the linear appoximation to estimate the maximum error in the calculated surface area. and estimate the relative error in the calculated surface area.

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delta A = 2*[(delta C)/C]*Area
= A/74
(C is the circumference; A is the area)