Find unknown length

1
EXAMPLE 5
Find unknown length
SOLUTION
Write formula for the area of a triangle.
Substitute 308 for A and 28 for b.
Solve for h.
2
for Example 5
GUIDED PRACTICE
7. The area of a triangle is 64 square meters,
and its height is 16 meters. Find the length of
its base.
SOLUTION
Write formula for the area of a triangle.
Substitute 64 for A and 16 for h.
8 b
Solve for b.