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duyphan
16.08.2020 •
Mathematics
Plz help with equation of the circle will award fastest CORRECT answer with brainliest
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Ответ:
Step-by-step explanation:
The equation for a circle is given by:
Where (h,k) is the center and r is the radius.
The center is the red dot, which is (1,2). Thus, h=1 and k=2.
To find the radius, you need to use the distance formula. We are given two coordinates: the center (red dot) at (1,2) and a blue dot on the circle at (2.5,4). Find the radius by using the distance formula:
Let (1,2) be x₁ and y₁ and let (2.5,4) be x₂ and y₂. Therefore:
Thus, r is 2.5.
Plugging these numbers into the equation, we have:
Ответ:
Step-by-step explanation: