Question

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

a. 21 units
b. 25 units
c. 34 units
d. 36 units

Answer 1

Using distance formula find length of all sides

Answer 2

what is the distance formula?

Answer 3

then simply add the length of the sides

Answer 4

\[D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\]where D is the distance between points (x_2,y_2) & (x_1,y_1)

Answer 5

36?

Answer 6

@jiteshmeghwal9

Answer 7

yes u r right

Answer 8

Thanks. Can you help with another?