A garden is in the shape of a right angled triangle. The length of the shortest side is l7 m and the area of the garden is 346.8 ml. Calculate the length of the longest side of the garden.

A garden is in the shape of a right angled triangle.

The length of the shortest side is l7 m and the area of the garden is 346.8 ml.

Calculate the length of the longest side of the garden.