What is the final step ?

m∠a is 90°

m∠b is 40°

i believe it's a.

i'm not sure on this one, most likely correct.

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076

d

because parallelagram have all 4 angels the same size dependeing and a rectangle and square are oth parallelogram