HELP!! i don't know how to do my math.

Question

Graph a circle with a center (0.0) that passes through (0,2). Find the area and circumference, both in terms of pie and to the nearest tenth. Use 3.14 for pie.

Answer 1

The trick is that the center of the circle is at (0, 0), the intersection of the x and y axis.

The circle passes through not only (0, 2) but also (0, -2).

The radius (r) of the circle is 2.

(A)Area of a circle = π r².

(C)Circumference of a circle = 2 π r.

A = π (2)² = 4π = 4(3.14) = 12.56

C = 2 π (2) = 4π = 4(3.14) = 12.56