1 1/4 because if you give each family a pie there is on pie left so you would have to split that into fourths.
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A= 3.14* 12^2
= 3.14* 144
= 452.16cm^2
Answer:
The value of a = 14
Step-by-step explanation:
Given
(x₁, y₁) = (2, 4)
(x₂, y₂) = (6, a)
(x₃, y₃) = (-1, 1)
A = 9 sq.units
Area of a triangle with vertices (x₁, y₁), (x₂, y₂), and (x₃, y₃) is:
substituting the values (x₁, y₁) = (2, 4), (x₂, y₂) = (6, a), (x₃, y₃) = (-1, 1), A = 9 in th formula
Multiply both sides by 2
simplify
As the area is always positive.
so
Add 18 to both sides
simplify
Divide both sides by 3
Thus, the value of a = 14
It's an irrational number because it's does not repeating in the same order (the one with a dash above it), and you can't change it into any other form of number, such as fraction or square root of something, so it's an irrational number.