Find the area of the circle. Round your answer to two decimal places, if necessary.
1 answer:
Answer:
379.94 in.²
Step-by-step explanation:
To find the area of a circle, multiply the radius by itself twice, then multiply the product by pi.
In the image, the diameter is shown.
To find the radius of a circle, divide the diameter by 2.
The radius of this circle is 11 inches.
Next, multiply the radius by itself twice.
Lastly, multiply the product by pi (3.14).
Therefore, the area of this circle is 379.94 inches squared.
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Answer:
49
Step-by-step explanation:
Because there is a minus sign infront of x-3, we can convert x-3 into the negative form:
- * x
- * -3
-x + 3
Which gives us:
(-x + 3)(x + 11)
Now expand the brackets with the formula:
(a + b)(c + d) = ac + ad + bc + bd
-x * x = -x²
-x * 11 = -11x
3 * x = 3x
3 * 11 = 33
-x² - 11x + 3x + 33
-x² - 8x + 33
The formula for finding the x coordinate of a vertex in a quadratic equation is:
x =
Plug known variables in:
Now, to find the y coordinate, plug this variable back into the quadratic equation:
-x² - 8x + 33
y = 49
So the y coordinate of the vertex is 49.
Hope this helps!
Answer:
6
Step-by-step explanation:
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Answer:
Step-by-step explanation:
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Required
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