Answer:
70 + (-30) + 2 + (-9) + 0.3 + (-0.1) = [70 + (-30)] + [2 + (-9)] + [0.3 + (-0.1)] explanation:
Exact answer
=6√3 (Decimal: 10.392305) I think sorry is i am wrong

Explanation
Step 1
find the coordinate of every point of the quadrilateral
C(-3,1)
J(0,1)
K(1,4)
M(4,-2)
Step 2
When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed).
so

therefore

so, the answer is

i hope this helps you
Its a because you multiply 3 with 11 to get 33 minus 8 equals 25
25=3(11)-8
25=33-8
25=25