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March 28, 2015

March 28, 2015

Posted by **Jen** on Tuesday, July 5, 2011 at 3:05pm.

- College Math -
**PsyDAG**, Tuesday, July 5, 2011 at 3:50pmSee later post.

- College Math -
**STEVE**, Monday, July 18, 2011 at 9:47pmThe shortest side, we are told, is 20mm. This is one of the 'legs' of the right triangle, adjacent to the right angle.

We are told that the longest side is 52mm. This by definition is the hypotenuse (the side OPPOSITE the right angle). Hence the side we are trying to find the length of is the other 'leg' which has intermediate value.

Using Pythagoras' Theorem, and allowing the unknown 'base/ leg' be x:

(20)^2 + (x)^2 = (52)^2

or (4000 + (x^2) = (2704)

implying x = 48mm after simplification, etc..

The Perimeter, therefore, is (20+48+52)mm = 120mm.

The area , therefore, is = 1/2 * base * perp. height

Area = 1/2 * 48 * 20 = 480 mm^2.

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