Your class has 26 students, which represents 5% of your school's enrollment. your friend uses the proportion 5/100 =n/26 to find the number of students in your school . explain your friend's error? can you guys me on this problem. by the way the / is a fraction.

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 %