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1. Give the equation of a circle
whose center is at the origin
and the radius is 4 units. *
O ^
A. x^2 + y^2 = 2
O O O
B. x^2 + y^2 = 4
2
C. x^2 + y^2 = 8
D D. x^2 + y^2 = 16​

Sagot :

JSLICK99IN

Answer:

D. x² + y² = 16

Step-by-step explanation:

(x - h)² + (y - k)² = r²

center is at the origin and radius is 4

(0,0) r=4

so, h=0, k=0, r=4

(x - 0)² + (y - 0)² = 4²

x² + y² = 16

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