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The equation of a circle
defines a circle centred at (xc,yc) with radius r.
So with (xc,yc)=(0,3), and r=4
the equation becomes
Answer:
D
Step-by-step explanation:
Δ ABC and Δ RSC are similar triangles, thus the ratio of corresponding sides are equal, that is
= , substitute values
= = 3 ( multiply both sides by 5 )
BC = 5 × 3 = 15 → D