Answer:
b = 15.2 m
h = 13.2 m
Explanation:
The area of a right triangle is given by:
(1)
Where:
b: is the base
h: is the height
If the base is 2 meters greater than the height we have:
(2)
And if the area of the triangle is 100 m², the dimensions of the base can be found by entering equation (2) into (1):

By solving the above quadratic equation we have:

And by entering the above value into equation (2) we have:

Therefore, the dimensions of the base and the height are 15.2 m and 13.2 m respectively.
I hope it helps you!