Question

What is the perimeter of a triangle with vertices located at (-1, 4), (2, 7), and (1, 5), rounded to the nearest hundredth?
A. 7.63 units
B. 7.89 units
C. 8.71 units
D. 9.24 units

Answer 1

i think C

Answer 2

\[\sqrt{(-1-2)^2+(4-7)^2}+\sqrt{(-1-1)^2+(4-5)^2}+\sqrt{(2-1)^2+(7-5)^2}\]

Answer 3

wow

Answer 4

Do the calculation yourself... Try to remember the formula...

Answer 5

it is C