Answer:
i would go for the first one but im not entirely sure
i suggest you wait to see other people's answers
0.7777777778
don't you have calculators or internet, you could easily find your question on internet
(a)36 = 6
(b)81 = 9
(c)256 = 16
(d)196 = 14
Those expressions are already in scientific notation.
So to find the area you should draw a line to make a right triangle then take the area of the 3 figures and add them together. See the picture.
