Circumfrence
Circle Terms
Area
Word Problems
100
If the radius is 3 cm what is the circumference?
18.84 cm
100
What is the formula for the radius
d/2
100
What is the formula for the area
A=TTr2
100
Martina is cutting out buttermilk biscuits with a circular cutter. The cutter has a radius of 2 centimeters. What is the cutter's diameter?
4 cm
200
If the radius is 7 cm what is the circumference?
43.96 cm
200
What is this?
Diameter
200
r=7cm
What is the area?
153.86 cm2
200
Ethan is using a magnifying glass. The lens of the magnifying glass has a radius of 4 centimeters. What is the lens's diameter?
8 cm
300
If the radius is 62cm what is the circumference?
226.08 cm
300
What is this?
Radius
300
r=5
What is the area
A=78.5
300
In the circus, a leopard has been trained to jump through a ring of fire. The trainer measures the ring and calculates that it has a circumference of 6.28 meters. What is the ring's radius?
1 meter
400
a=50.24 mm2
What is the circumference?
25.12 mm
400
What is the formula for circumference?
2TTr
or
TTd
400
d=16 m
What is the area?
200.96 m2
400
Stacy measured the button on her jacket. Then she calculated that it has a circumference of 25.12 millimeters. What is the button's radius?
4 millimetres
500
a=153.6 km2
What is the circumference?
43.96 km
500
What is this?
Chord
500
C=18.84 cm
What is the area?
28.26 cm2
500
The button on Santiago's shirt has a diameter of 8 millimeters. What is the button's area?
50.24 mm