B, 190.
First you find the area of the circle (pi times radius squared) however, since you are given diameter, you must find radius by dividing diameter by 2. So, your radius is 9, then you plug it into the formula and you get 254.5. After multiplying this by 0.75 because you only want to find 75 percent of the area, you get the answer of 191m
3/2 is the answer
i say this because you have to think of the problem as
4y=6x
divide the 4
y=6x/4
simplify
3/2
I did this manually on some notepaper but my scanner is not working.
The answer is 72 cm^2
I believe it is (2+2) × (3+3)