Answer:
The length of the base will be: 17 m
Explanation:
Given the area of the triangle

Using the formula of Area of a triangle:

Here,
As the base of a triangle is 7 less than twice its height.
so

so the formula of Area of a triangle becomes







As height can not be negative, so:
m
Hence, the length of the base:



m
Therefore, the length of the base will be: 17 m