Question

TRY THIS
If the diameter of the cross - section of a wire is decreased by 5%, by what percentage
should the length be increased so that the volume remains the same?
2. Surface areas of a sphere and cube are equal. Then find the ratio of their volumes.​

Answer 1

Answer:

mathematics, an identity element, or neutral element, is a special type of element of a set with respect to a binary operation on that set, which leaves any element of the set unchanged when combined with it. This concept is used in algebraic structures such as groups and rings.