Radius/Diameter
If the radius is 5 what is the DIAMETER?
10
Find circumference: When radius = 5 (nearest tenth)
31.4
What is the circumerence of a circle with the diameter of 2? (nearest hundredths)
6.28
a circle pond measures 89 yards all around and has a diameter of 28.3 yards. What is the circumference?
89 yards
What is a Diameter
The distance from one side of the circle to the other side straight through the center
If the diameter is 23 what is the RADIUS?
11.5
Find Circumference when Radius - 10 (nearest tenth)
62.8
What is the circumference of a circle with a diameter of 4? (nearest hundredths)
12.57
A circular table got cut in half. The distance from edge to edge of the cut part is 3 feet. What was the circumference of the table before it got cut in half?
9.42 feet
What is a radius
half of the diameter. the distance from the center to the side of the circle
If the radius is 56.35 the DIAMETER is?
112.7
Find Circumference when Radius = 25 (nearest tenth)
157.1
What is the circumference of a circle with a diameter of 14? (nearest hundredths)
43.98
What is the circumference if the Diameter is 1" (nearest hundredths)
3.14
What is circumference?
The distance of the outside of the circle
If the radius is 45.28 what is the DIAMETER?
90.56
Find Circumference when Radius = 50 (nearest tenth)
315.2
What is the circumference of a circle with a diameter of 22? (nearest hundredths)
69.12
Gene’s frying pan is 14.5 inches in diameter. What is the circumference of his frying pan? (round to the nearest tenth place)
45.5 in
What are the 2 formulas for finding circumference?
AND
Describe each one
C=2 pi r - when given radius, multiply 2*3.14*radius
C= pi d - when given diameter, multiply 3.14*diameter
If the diameter is 50.684 what is the Radius?
25.342
Find Circumference when Radius = 75 (nearest tenth)
471.2
What is the circumference of a circle with a diameter of 100? (nearest hundredths)
314.16
Brad uses a plastic edging to create the border of a circular flower garden in his yard. From the center of the garden to the edge measures 5 meters. What's the distance all around the garden?
31.4 meters
How can we find pi
Hint: using circumference and diameter
the ratio between the circumference and diameter
C/d