FIRST THINGS FIRST IMMA GIVE YOU SOMETHING EASY….
WE ARE GONNA CONVERT DIAMETER TO RADIUS, AND THEN FIND THE AREA OF THE CIRCULAR DARTBOARD
d = 20 inches
diameter = radius x 2
20/2= 10
radius = 10 inches
Area = pi(radius)^2
A = pi(10)^2
pi = 3.14
A = 3.14(10)^2
A = 3.14(100)
A = 314
the area is 314 square inches