Icannot seem to figure out this mathematical equation

Which rotation about its center will carry a regular hexagon onto itself

Larger pets need to be transported in larger portable kennels. using a graphing calculator and the relationship between the width, length, and height, find the dimensions of a portable kennel whose volume is 7.4 ft3. the dimensions of a portable kennel can be expressed as width x, length x + 0.4, and height x − 0.2? what are the dimensions of a portable kennel with a volume of 7.4 ft3? use a graphing calculator to solve. round the dimensions to the nearest tenth.

Shirley spelled 12 of her 15 spelling words correctly on the test. what percentage did shirley get on the test?