PLEASE HELP I GIVE BRAINLEIST

Please answer all.

ONE WITH X IS A
ONE WITH Y IS B
ONE WITH Z IS C

So when you answer say a. ###
PLEASE HELP I GIVE BRAINLEIST

Can you simplify 4/7? 24 points will be awarded!

When y’all answer can y’all explain too !

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 %