Mathematics: The equation (x-1)^2+(y-3)^2=r^2 represents circle a. The point B (4,7) lies on the circle. What is r, The length of the radius of circle a

The equation (x-1)^2+(y-3)^2=r^2 represents circle

carolinamleal04

22.01.2022

r=5

Step-by-step explanation:

centre is (1,3)

r=√((4-1)²+(7-3)²)=√(9+16)=√25=5

r=5

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angelicadattoli

13.10.2022

An expression does not include an equal sign.
A variable is an unknown value

An example of an expression with a variable : 4 + x

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