a rectangle fish tank that has a base area of 0.3m2 and height of 30cm and is filled with 80L of water. ten large fish, each with a volume of 50cm3, are placed into the tank. by how much does the water level rise.

a new car manufacturer is designing a logo. it is in the shape of a diamond inside a rectangle. the diamond is to have a horizontal width of 3cm and an area equal to one-sixth of the area of the rectangle. find the required height of the diamond