The volume of the prism is calculated by multiplying the length, L, width,W, and depth or height, H. V = L x W x H Fish tank: V = 50 cm x 25 cm x 25 cm = 31250 cm³ Depth of the water in tank (with castle - without castle) d = 57.5 cm - 48 cm = 9.5 cm Volume of the caste: V = 9.5 cm x 50 cm x 25 cm = 11875 cm³
