Posted by Natalie on Sunday, April 26, 2009 at 5:20pm.
your triangle is right-angled, 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
Where did you get 3^2 from?
I really don't know, lol, must be senility
of course I meant
5^2 + 12^2 = 13^2
the rest is still correct.
Lol, okay. Thank you very much !
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