* PLEASE ANSWER TY! *

Actually Welcome to the Concept of the Circles.

thus the, Equation of circle with centres as (h, k) is given as,

(y-k)^2 + (x-h) ^2 = r^2

where, r is the radius if the circle.

so here, we can see that,

thus , we can say that, 2r = d

thus diameter = 20 units

the answer is here: : )

:

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