Please help. Don't know how to do this...

The circumference of a sphere was measured to be 88 cm with a possible error of 0.5 cm.

(a) Use differentials to estimate the maximum and relative error in the calculated surface area. (Round maximum error to the nearest whole number and relative error to three decimal places.)

Maximum error=? cm^2

Relative error= ?

(b) Use differentials to estimate the maximum and relative error in the calculated volume. (Round maximum error to the nearest whole number and relative error to three decimal places.)

Maximum error= ? cm^3

Relative error=?