Posted by Natalie on Sunday, April 26, 2009 at 5:20pm.
If the area of Triangle T, sides 5,12, and 13 equals the area of rectangle R, width 3, then what is the perimeter of rectangle R?

geometry  Reiny, Sunday, April 26, 2009 at 6:30pm
your triangle is rightangled, since
3^2+5^2=13^2
so the area is 30
so rectangle R is length x width = 30
3length = 30
length = 10
so its perimeter is 2(10+3) = 26

geometry  Anonymous, Sunday, April 26, 2009 at 6:43pm
Where did you get 3^2 from?

geometry  Reiny, Sunday, April 26, 2009 at 6:57pm
I really don't know, lol, must be senility
of course I meant
5^2 + 12^2 = 13^2
the rest is still correct.

geometry  Natalie, Sunday, April 26, 2009 at 7:00pm
Lol, okay. Thank you very much !
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