Which cylinders with base B and height h have equal volumes?

First, third and fourth
the volume (V) of a cylinder is calculated using the formula
V = area of base × height
Calculate the volume of each cylinder
(1) V = 15 × 17 = 255 in³
(2) V = 7.2 × 6.5 = 46.8 in³
(3) V = 34 × 7.5 = 255 in³
(4) V = 8.5 × 30 = 255 in³