Question

What is the perimeter of triangle PQR with vertices P(-2,9), Q(7,-3), and R(-2,-3) in the coordinate plane.

Answer 1

PQR with vertices P(–2, 9), Q(7, –3), and R(–2, –3)
first distance P(–2, 9), Q(7, –3)
Solved by pluggable solver: Distance Formula to determine length on coordinate plane
The distance (d) between two points is given by the following formula:

d=sqrt%28%28x2-x1%29%5E2+%2B+%28y2-y1%29%5E2%29

Thus in our case, the required distance is
d=sqrt%28%287--2%29%5E2+%2B+%28-3-9%29%5E2%29=+15+

Answer 2

PQ = 15
QR = 9
RP = 12

The perimeter is 15 + 9 + 12 = 36.

Answer 3

Thxs :)

Answer 4

np