Question

Find the circumference and area of the circle with radius 9 ft

Answer 1

Circumference is approximately 56.55 ft

Answer 2

Circumference of the circle is calculated using the following rule:
circumference = 2*pi*radius where
pi is a fixed value approximately equal to 3.14
radius is given = 9 ft

Substitute in the above equation to get the circumference as follows:
circumference = 2*3.14*9 = 56.52 ft