Question

find the area of the triangle PQR formed by the points P(-5,7),Q(-4,-5)bad R(4,5)​

Answer 1

Answer:

Perimeter of the triangle formed by points P(-5, 7), Q(-4, -5) and R(4, 5) is 40.11

Step-by-step explanation:

Distance between PQ

=√[-4-(-5)^2+(-5-7)^2

=√1+144

=√145

= 12.04

Distance between QR

=√[4-(-4)]^2+[5-(-5)]^2

=√256+100

=√356

=18.86

Distance between RP

=√[4-(-5)]^2+(5-7)^2

=√81+4

=√85

=9.21

Perimeter of the triangle

=12.04+18.86+9.21

=40.11