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Activity 1: Radius of a Circle
Directions: Given the graph of each circle, find the length of the radius r using
the distance formula.

(2,2)
r
(0,0)
​

Sagot :

Tsukiko20go

Answer:

2√2i

Step-by-step explanation:

formula:

d=√(X2-X1)²+(Y2-Y1)²

=√(0-2)²+(0-2)²

=√-4+(-4)

=√-8

you can't square root it because it's negative so separate

*√-1•√8

negative will cancel out change into i

=2√2i

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