Respostas

2013-11-18T09:00:49-02:00
DAB = \/(1+1)²+(1+1)² --> dAB = \/(2²+2²)--> dAB = \/(4+4) = \/8 = 2\/2
dBC = \/(3-1)²+(1-1)² --> dBC = \/2² --> dBC = \/4 --> dBC = 2
dCD = \/(-1+3)²+(-6+1)² --> dCD = \/(2²+(-5)² --> dCD = \/(4+25) --> dCD = \/29
dAD = \/(-1-1)²+(-6-1)² --> dAD = \/(-2)²+(-7)² --> dAD = \/(4+49) --> dAD = \/53
P4 = 2\/2+2+\/29+\/53
2 3 2