△abc
has vertices at

a(3,4),
b(−1,1),

and
c(−2,5)
what is the approximate perimeter of
△abc?

The approximate perimeter of  △ABC is 12.34 units

Step-by-step explanation:

we know that

The perimeter of a triangle is the sum of its three length sides

so

the formula to calculate the distance between two points is equal to

step 1

Find the distance AB

we have

A(3,4), B(−1,1)

substitute the values

step 2

Find the distance BC

we have

B(−1,1),C(−2,5)

substitute the values

step 3

Find the distance AC

we have

A(3,4),C(−2,5)

substitute the values

step 4

Find the perimeter

need more information

step-by-step explanation:

i those same problems in math and dont know how to do them