Question

calcule o perimetro do triãngulo Abc, sendo A(1,0), B(3,7) eC(-2,4)

Answer 1

d²=(1-3)²+(0-7)²
d²=4+49
d=√53

d²=(1+2)²+(0-4)²
d²=9+16
d²=25
d=5

d²=(3+2)²+(7-4)²
d²=25+9
d²=34
d=√34]

√53+√34+5