Can anyone explain these?
a rectangle has a perimeter of 36 in. the length and width are scaled by a factor 2.5. what is the perimeter of the resulting rectangle?

a triangle has an area of 36 cm². the base and height are scaled by a factor of 5.
what is the area of the resulting triangle?

two similar solids have a scale factor of 5: 3 . what is the ratio of their volumes, expressed in lowest terms?

a cylinder has a height of 30 ft and a volume of 63,679 ft³. what is the radius of the cylinder?

a brand new filled can of chicken broth is 10 cm tall and has a radius of 10 cm. mishka uses some of the broth to cook and now the broth left in the can is 6 cm high. how much broth did mishka use?