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Here are some tips for Triangle Area 2, which aligns with Hawaii state standards:

Triangle Area 2


This topic is about solving for the unknown in triangle areas problems.
To master this topic, you should understand the triagle area formula and solving for unknowns.
For review, see Triangle Area and Single Variable Equations.



Example 1: Picture problem

The area is 12 cm2
x =
Use the formula for triangle area and plug in what you know.
Then solve for the unknown.
It is given that the triangle area is 12 cm2.
Looking at the picture, we see that the base is 6 cm.
We are solving for the height, x.
The answer is x =


Example 2: Word problem

A triangle has an area of 70 yd2. The height is 10 yd. What is the length of the corresponding base?
base =

Use the formula for triangle area and plug in what you know.
Then solve for the unknown.

It is given that the triangle area is 70 yd2 and the height is 10 yd.
We are solving for the base, b.
The answer is base = .

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