Posted by **Sarah** on Sunday, May 3, 2009 at 6:11pm.

A painter needs to cover a triangular region 61 meters by 66 meters by 72 meters. A can of paint covers 70 square meters. How many cans will be needed?

- Math -
**drwls**, Sunday, May 3, 2009 at 7:18pm
This question was asked and answered about two weeks ago. Were you the person who posted the question? Did you see the answer?

There is a formula for the area of a triangle in terms of the lengths of three sides, which I provided in my previous answer. Use that formula.

If you are asking this question for the fiorst time, go to

http://www.csgnetwork.com/herontriangleareacalc.html

Divide the area by 70 m^2 per can for the number of cans.

- Math -
**Sarah**, Sunday, May 3, 2009 at 7:23pm
would it be 1878.58 divided by 70m^2 =

4900/1878.58= 2.6 so 3 cans

- Math -
**drwls**, Sunday, May 3, 2009 at 7:48pm
Yes. That is the correct area and number of cans

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