Question

The map of a walking trail is drawn on a coordinate grid with three points of interest. The trail starts at R(−1, 4) and goes to S(5, 4) and continues to T(5, −2). The total length of the walking trail is ____ units. (Input whole numbers only.)

Answer 1

sqrt[(x2-x1)^2 + (y2-y1)^2]
RS = sqrt[(5--1)^2 + (4-4)^2]
RS = 6
ST = sqrt[(5-5)^2 + (-2-4)^2]
ST = 6
RS + ST = 12
Answer: 12