480=8x12xBreadth Breadth=480÷8÷12=5cm Remaining=520cm3 V=50x12x15=9000cm3 V Water needed=9000x4/5=7200cm3 Answer= 7200cm3 Extension It is 1/4 filled with water. Find the volume of the water needed to fill the vase to its brim. Brim=9000x3/4=6750 Answer=6750 Shaded triangles=48 Shaded triangle=72 Workout: 16x9÷2=72