Answer:
15.8 to nearest tenth.
Step-by-step explanation:
Using the distance formula to find the lengths of the 3 sides:
AC = √ [(5-0)^2 + (-1- -3)^2] = √(25+4)
= √29.
BC = √[(-1--0)^2 + (1- -3)^2)] = √17
AB = √[(5- -1)^2 + (-1-1)^2)] = √40
The perimeter = √29. + √17. + √40
= 15.8 to nearest tenth.
