Simplify the expression: t3 x t5

I can’t make the 3 or 5 small but they are supposed to be like smaller numbers, I think t to the power of 3 for example

Which sentence describes why polygon mnop is congruent to polygon jklp? a. polygon jklp maps to polygon mnop through a translation. b. polygon jklp maps to polygon mnop through a rotation. c. polygon jklp maps to polygon mnop through a dilation. d. polygon jklp maps to polygon mnop through a stretch.

Asphere has a diameter of 10 in. what is the volume of the sphere?

How to do this , and can some one explain