The formula for the area of a circle is:
A=πr²
We also know that the diameter of a circle is twice the size of its radius
d=2r
So if the diameter is 18...
18=2r
divide both sides by 2
9=r
The radius of the circle is equal to 9cm
Now we can solve for the area
A=πr²
A=π9²
A=π81
A=81πcm²
The exact area of a circle whose diameter is 18cm is 81πcm²
Answer=D
Answer:
line of symmetry
Step-by-step explanation:
The term that represents a design divided so that every point on one side coincides with a point on the other side is known as symmetry. This involves an axis of symmetry dividing the design into two contrasting fields.
The concept in question is commonly known as symmetry, and it is often a key factor in design and visual arts. In a symmetrical design, every point on one side of the line, often referred to as the axis of symmetry, coincides with a corresponding point on the other side. This alignment creates a mirroring effect, dividing the entire design into two contrasting fields, like images divided on a poster. For instance, if you have a vertical line dividing a rectangle directly down the middle, and you have a circle on the left side of the line, a symmetrical design would have a corresponding circle on the right side.
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Answer:
g(x) = x² - 5
Step-by-step explanation:
The vertex form of a parabola is:
→ y = (x - a)² + b
where (a, b) is the vertex of the parabola.
From the graph, we can identify that the vertex has been shifted down 5 units, and it has not been shifted horizontally. Therefore, we can assign the following a and b values:
Now, we can plug these into the vertexformequation to get the equation of the function g(x):
y = (x - 0)² + (-5)
This simplifies to:
y = x² - 5
Answer:
13
Step-by-step explanation:
Step-by-step explanation:
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