Answer:
28.26
Step-by-step explanation:
A = r^2
So the equation is. Area of circle = pi(3.14) * radius(3) to the power of 2 (^2)
A = 3.14(3)^2
A = 3.14(9)
A = 28.26
7= 1
8= decimal : 0.00390625
try using symbolab.com
315
because 15% of 2,100 is 315