Circle A has a center at #(2 ,8 )# and an area of #8 pi#. Circle B has a center at #(3 ,2 )# and an area of #27 pi#. Do the circles overlap?
Checking to see if the sum of the radii of the circles is greater than the distance between the circles' centers, we find that yes, they do overlap.
Applying that in this case, we get the distance between the centers of the circle to be
As a matter of estimation, we can tell that
and
If we actually calculate the values, we get
meaning the estimation was correct, and the circles do overlap.
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To determine if the circles overlap, we need to compare the distance between their centers to the sum of their radii. If the distance between the centers is less than the sum of their radii, the circles overlap.
The distance between the centers of Circle A and Circle B can be found using the distance formula:
[ \text{Distance} = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} ]
For Circle A: ( (x_1, y_1) = (2, 8) ) For Circle B: ( (x_2, y_2) = (3, 2) )
[ \text{Distance} = \sqrt{(3 - 2)^2 + (2 - 8)^2} ] [ \text{Distance} = \sqrt{1 + 36} ] [ \text{Distance} = \sqrt{37} ]
The radius of Circle A can be found by taking the square root of its area divided by pi:
[ \text{Radius of Circle A} = \sqrt{\frac{8 \pi}{\pi}} ] [ \text{Radius of Circle A} = \sqrt{8} ]
The radius of Circle B can be found similarly:
[ \text{Radius of Circle B} = \sqrt{\frac{27 \pi}{\pi}} ] [ \text{Radius of Circle B} = \sqrt{27} ]
Now, we compare the distance between the centers to the sum of their radii:
[ \sqrt{37} < \sqrt{8} + \sqrt{27} ]
[ \sqrt{37} < \sqrt{8} + \sqrt{27} ]
[ \sqrt{37} < \sqrt{8} + \sqrt{27} ]
[ \sqrt{37} < \sqrt{8} + \sqrt{27} ]
[ \sqrt{37} < 2.83 + 5.2 ]
[ \sqrt{37} < 8.03 ]
Since the distance between the centers (( \sqrt{37} )) is less than the sum of their radii (8.03), the circles overlap.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- Circle A has a center at #(1 ,8 )# and an area of #15 pi#. Circle B has a center at #(5 ,3 )# and an area of #24 pi#. Do the circles overlap?
- A triangle has corners at #(9 ,5 )#, #(2 ,7 )#, and #(3 ,2 )#. How far is the triangle's centroid from the origin?
- How many values of x between 0.01 and 1 does the graph #sin(1/x)# cross the x-axis?
- A triangle has corners at #(9 ,1 )#, #(2 ,4 )#, and #(5 ,8 )#. How far is the triangle's centroid from the origin?
- Circle A has a center at #(12 ,2 )# and an area of #13 pi#. Circle B has a center at #(3 ,6 )# and an area of #28 pi#. Do the circles overlap?
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