Answer:
=12.4 units
Step-by-step explanation:
We can use the Pythagoras theorem to find the lengths of EF, FG, and HE
(GF)²=(ΔX)²+(Δy)²
(GF)²=(2--1)²+(4-3)²
=3²+1²
=10
GF=√10=3.16 units
(EF)²=(Δx)²+(Δy)²
=(2--1)²+(6-4)²
=3²+2²
=9+4
=13
EF=√13=3.61 units
(HE)²=(Δx)²+(Δy)²
=(-1--3)²+(6-3)²
=2²+3²
=4+9
=13
HE=√13=3.61 units
GH=(-1--3)=2 units
Perimeter =GF+EF+EH+HG
=3.16+3.61+3.61+2
=12.38 units
=12.4 units to 1 decimal place.
