18/20 is 90%
You can use a calculator to divide 18 and 20 and you will get 0.9 which is 90%
Or. simplify by dividing the top and bottom by 2, to get 9/10 which is still 90%
:)
A= base x height = 3x4 = 12 ft
Answer:

Step-by-step explanation:
First, use distribution to simplify

Then, simplify further by combining like terms

Solve

0.0000079 is your answer, I believe.