Find the center and radius of the circle whose equation is given below: x2 + (y − 3)2 = 16.

The circle equation image

image

Compare to the standard form of circle image

Where (h,k ) is center and r is radius of circle.

Center (0,3) radius = 4.

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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