Show:
radius
diameter
circumference
area
semicircles
100
What is radius
half the diameter
100
What is diameter
twice the radius
100
What is the formula for finding the circumference of a circle who's diameter is 4?
C=3.14 x 4 circumference = pie times the diameter
100
What is the formula for finding the area of a circle?
A= pi times the radius squared
100
What is the perimeter of a semicircle who's diameter is 2inches?
P=5.14 inches
200
What is the radius of a circle who's diameter is 60in?
r=30in
200
What is the diameter of a circle who's radius is 10mm?
d=20mm
200
What is the formula for finding the circumference of a circle who's radius is 15ft?
C= 2 x 3.14 x 15 circumference = 2 times pie times the radius
200
What is the area of a circle who's radius is 2in?
A= pi times 2 squared A= 12.56in squared
200
What is the perimeter of a semi circle who's radius is 4ft?
P = 20.56 ft
300
What is the radius of a circle who's diameter is 45ft?
r=22.5ft
300
What is the diameter of a circle who's radius is 1.5mm
d=3mm
300
What is the circumference of a circle who's radius is 8 mm?
C=2 x 3.14 x 8 C= 50.24mm
300
What is area of a circle who's radius is 7cm.
A=153.86cm squared
300
What is the perimeter of a semi circle who's radius is 2 inches?
10.28inches
400
What is the best way to find the radius of a circle if you know the diameter?
divide the diameter by 2
400
What is the diameter (in inches) of a circle who's radius is 3 feet?
d=72 inches
400
What is the circumference of a circle who's diameter is 30in?
C= 3.14 x 30 C= 94.2in
400
What is the area of a circle who's diameter is 10feet?
A=78.5 feet squared
400
What is the area of a semi circle who's radius is 3inches?
A=14.13inches squared
500
What is the radius of a circle who's diameter is 2 feet?
r=12ft
500
What is the diameter of a circle who's radius is 45.3cm
d=90.6cm
500
What is the circumference of a circle who's radius is 3.2 inches?
C=20.096 inches
500
What is the area of a circle who's radius is 9in?
A=254.34 inches squared
500
What is the area of a semi circle who's diameter is 10 inches?
A=39.25 inches squared