How do you find the area of a circle with diameter of 16?

1 Answer
Jul 31, 2015

Answer:

#approxcolor(blue)(201 cm^2#

Explanation:

The area of a circle is given by formula:
#color(blue)(pir^2#

#pi# has a constant value of #3.14#

And the radius of the circle is , half the diameter = #d/2 = 16/2 = 8cm# (assuming the unit to be in cm)

The area #= pir^2 = 3.14 xx (8)^2cm^2#

#=3.14 xx (64)#

#=200.96 cm^2#

#approxcolor(blue)(201 cm^2#