Find the area of a circle with a diameter of 4.
Either enter an exact answer in terms of at or use 3.14 for and enter your answer as a decimal.

Area of a circle = PI x r^2, where r is the radius of the circle. The radius is half the diameter.

Radius = 4/2 = 2

Area = PI x 2^2

Area = 4π

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11