Ok so to answer this, we first need to figure out the area of both circles
we will use the formula A=πr²
so our two areas end up being 121π and 81π
now all we do is subtract the smaller from the larger
121π - 81π = 40π
shaded region = 40π
Answer: c.) 4
Step-by-step explanation:
y = 4
Plug in 4 for y.
6(4 + 2) + 4 = 40
24 + 12 + 4 = 40
40 = 40
Answer:
The volume is 4908.75 ft³.
Step-by-step explanation:
Don't think about it as a block. Remember the rule for volumes of prisms: cross sectional area times length.
In this case, the cross section is a trapezium, so let's find the area for it:

Now, multiply it by the length to get the volume:

4x + 5y + x - 5xy - 3y
5x + 5y - 5xy - 3y
5x + 2y - 5xy