1 A motorboat travels the distance between ports A
and B on a river and returns to
5 h. Find the distance between
2
two ports if the speed of the
boat in calm water is 16.5 km/h
and the current speed is 1.5 km/h

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %