Posted by **Jen** on Tuesday, July 5, 2011 at 3:29pm.

Find the perimeter and area of a right triangle if the shortest side is 20 mm. and the longest side is 52 mm.

- Damon or Sue please help!! -
**Damon**, Tuesday, July 5, 2011 at 3:36pm
The longest side of a right triangle is the hypotenuse, c in

a^2 + b^2 = c^2

so

a^2 + 20^2 = 52^2

a^2 = 2704 - 400 = 2304

a = 48

perimeter = 48 + 20 + 52 = 120 mm

area = (1/2)48(20) = 480 mm^2

- Damon or Sue please help!! -
**Jen**, Tuesday, July 5, 2011 at 3:42pm
oh thank you so much!! i was totally off...

- Damon or Sue please help!! -
**Damon**, Tuesday, July 5, 2011 at 3:45pm
You are welcome :)

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