400
The new longboard you just bought is in the shape of a large parallelogram. You want to try to beat the guiness world record of the most people to ride on a single longboard at the same time. To do so, you need to calculate the area of your longboard. The length of your longboard is 1.25m, the width of it is 0.5m and one of the diagonals measures 1.5m. What is it's area in m?
0.625m