First, find the circumference of the wheel using the formula C = πd, where C is the circumference and d is the diameter: C = 3.14 * 28 = 87.92 inches.

Next, multiply the circumference by the number of rotations: 87.92 inches * 10 = 879.2 inches.

First, we find the total flat fee cost by multiplying the daily flat fee by the number of days rented: $25/day * 3 days = $75.

Next, we find the additional charge for the miles driven: $0.15/mile * 100 miles = $15.

Finally, we add the flat fee cost and the additional charge to find the total cost: $75 + $15 = $90.

Let's denote the measures of the angles as follows:

Let $A$ be the measure of the first angle. Let $B$ be the measure of the second angle. Let $C$ be the measure of the third angle.

According to the problem:

1. $B=2A-20$ (One angle is 20 degrees less than twice the measure of another angle).
2. $C=A+30$ (The third angle is 30 degrees more than the first angle).

We also know that the sum of the angles in a triangle is always 180 degrees. Therefore:

$A+B+C=180$

Now, substitute the expressions for $B$ and $C$ from the first two equations into the third equation:

$A+(2A-20)+(A+30)=180$

Combine like terms:

$4A+10=180$

Subtract 10 from both sides:

$4A=170$

Divide by 4:

$A=42.5$

Now that we know $A$, we can find $B$ and $C$:

$B=2\times 42.5-20=85-20=65$

$C=42.5+30=72.5$

So, the measures of the three angles in the triangle are 42.5∘,65∘, and 72.5∘

The perimeter of a rectangle is calculated by adding the lengths of all its sides: (2 * length) + (2 * width) = (2 * 30) + (2 * 10) = 60 + 20 = 80 feet.

1. Fill the 3-gallon container completely.
2. Pour the 3 gallons from the 3-gallon container into the 5-gallon container.
3. Fill the 3-gallon container again.
4. Carefully pour the water from the 3-gallon container into the 5-gallon container until the 5-gallon container is full.
5. Since there was space for 2 more gallons in the 5-gallon container, you have now 1 gallon left in the 3-gallon container.
6. Empty the 5-gallon container completely.
7. Pour the remaining 1 gallon of water from the 3-gallon container into the 5-gallon container.
8. Fill the 3-gallon container completely once more.
9. Pour the entire 3 gallons from the 3-gallon container into the 5-gallon container, which already has 1 gallon in it. Now, the 5-gallon container will have exactly 4 gallons of water.