Answer:54
Explanation:
1. If it is a right triangle then the ratio of the sides 3:4:5
2. If 5*3equals the 15 then we got to times 3 and 4 both by 3
3. The sides are now 9, 12, 15
4. We use the height and width (not the hypotenuse) and multiply
5. 9*12=108
6.108/2=54