Answer:
Explanation:
The formula for the area of a triangle is:
1/2×base×height
If you know the area of the triangle and height you can apply the area formula:
A=1/2×base×height
in reverse to calculate the length of the base:
b=2A/h
given, h=60dam
A=18
so, b=2×18/60
b=36/60
b=0.6
The answer is 0.6