Does anyone know the answer to this?

Acylinder has volume 45π and radius 3. what is it’s height?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1