Solve the equation. 7.7 = a - 4

a = 8.1

a = 1.925

a = 7.3

a = 11.7

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

step-by-step explanation:

for the free

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.