How many faces are in the given polyhedron? need with this question and the next 2 i am posting pics of explain step by step how you got the answer, 10 points and brainliest for each question!

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .