Question

What is the perimeter of the triangle? Round to the nearest tenth.

Question 2 options:

12.8 Units


19.8 Units


30.5 Units


23.5 Units

Answer 1

length of BA=
`\sqrt{(3+2)^(2)+(0-3)^(2)}`

length of BC=
`\sqrt{(3+4)^(2)+(0+3)^(2)}`

length of AC=
`\sqrt{(-2+4)^(2)+(3+3)^(2)}`

AB=BA=6.7

BC=7.6

AC=CA=6.3

PERIMETER=AB+BC+CA=19.8

Explanation:

we can use length of line formula if the line cordinate is (a,b) and (c,d)

`\sqrt{(c-a)^(2)+(d-b^(2))}`