Exam review : Circles
300 ugly kids were asked what is their favorite color. how many like blue? how many like green? how many like gold?
Blue: 75 kids
What is the estimated ratio of circumference to diameter? 3.14:1
Find the circumference when the radius is 6cm/
R=D simplified formula > C=2 3.14 r
Find area when diameter is 10m
A=3.14 r squared
A=3.14 5 squared
The measure of a sector is 20% of the data. what is the central angle for this sector?
20% of 360
0.2 x 360=72 degrees
I have a pool with a radius of 6m. my yard is 30m by 15m. how much space do i have left in my yard
A yard=l x w r=pi r squared how much left= 450m squared - 113.10=336.9
= 15 x 30 r=113.10
= 450m squared