1.Johar wants to cover the wall of his room which measures of 3m×5m with square tiles of sides 0.5m.How many tiles does he need?
(3m×5m)×0.5m=7.5m
2.A cubic tank is filled with the water until 3/4 full.The length of the side of the tank is 50cm.Find the volume,in cm³,of the water in the tank.
3/4×50=37 1/2
有颜色的是我的答案。如果有错请大家教我好吗?