Answer:
≈ 30.63 cm²
Step-by-step explanation:
The shaded area is calculated by subtracting the area of the inner circle from the area of the outer circle.
outer circle has radius = 8 ÷ 2 = 4 and inner circle has radius = 5 ÷ 2 = 2.5
shaded area = πr₁² - πr₂² (r₁ is outer and r₂ is inner )
A = π (4² - 2.5²)
= π(16 - 6.25) = 9.75π ≈ 30.63 cm²
I think the answer would be 30 minutes
Answer:
n=-5
Step-by-step explanation:
Let "n" represent the unknown number.
So, the equation asks for 4n and two more, or +2, that is all equal to -18.
So, your equation will be:
First, subtract 2 from both sides:
Then, divide both sides by 4:
Therefore, n=-5.
Answer:
Not sure what this question is asking but for the hourly rate, the answer is $20.
Step-by-step explanation:
You can write an equation as 20x=400.
Simply solve it by dividing each side by 20 to find the hourly rate in dollars per hour.
You get x=20 as your answer so 20 dollars per hour!
Hope this helps! :)
