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
Since
Is a perfect square, we can think of the "-6" at the end as a "+4-10" and we have
Which is the required form
No solutions, I don’t think there’re any solutions
Suppose U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} is the universal set and G = {1, 2, 3, 4, 5, 6, 7}. What is G?
Nesterboy [21]
Your posted question defines G, then asks what G is.
G is the set in the definition you gave.
G = {1, 2, 3, 4, 5, 6, 7}
_____
Perhaps you want to know the complement of G. That is all the elements of U that are not in G.
G' = {8, 9, 10}
