Greg builds a new pond which has a volume of 7.35 m3. It is 4.2 m long and 50 cm deep. What is the width of the pond?

volume = length x width x depth50cm = 0.5 m7.35 = 4.2 x 0.5 x X7.35 = 2.1 x  Xx = 7.35 / 2.1x = 3.5width = 3.5 meters