Radius and Diameter
What is the diameter of a circle with a radius of 44 m?
d = 88 m
What is the circumference of a circle with a radius of 4 m?
Use 3.14 for pi
C = 25.12 m
What is the area of a circle with a radius of 30 ft.
Use 3.14 for pi.
2826 ft2
The diameter of a circle is 8 m.
Find the CIRCUMFERENCE in terms of pi.
C = 8pi
What is the radius of a circle with a diameter of 96 ft?
r = 48 ft
How do find the circumference if only the radius is given?
multiply the radius by 2 and 3.14
r x 2 x 3.14
What is the area formula for circle?
Area = Pi x radius squared
The radius of a circle is 3 cm.
Find everything else. (diameter, area, circumference)
IN TERMS OF PI
d = 6 cm
A = 9pi cm2
C = 6pi cm
What do we do to find the radius if we only have the diameter?
Divide the diameter by 2
True or False ?
If the circumference of a circle is 21.98in, the radius is 7in. Use 3.14 for pi.
False, the Circumference of a circle with radius 7in is 43.96in.
The area of a circle with a 66in diameter is ___.
Use 3.14 for pi.
3,419.46 in2
The diameter of a circle is 7 cm.
Find everything else. (radius, area, circumference)
IN TERMS OF PI
r = 3.5 cm
A = 12.25pi cm
C = 7pi cm
use 3.14 for pi
c = 157 in
d= ________
r= ________
d = 50 in
r = 25 in
If the diameter of a circle is 5m what is the circumference?
Use 3.14 for pi.
C = 15.7 m
What is the area of a circle with a circumference of 12.56yd?
Use 3.14 for pi.
A = 12.56 yd2
The area of a circle is 196pi cm.
Find everything else. (radius, diameter, circumference)
IN TERMS OF PI
r = 14 cm
d = 28 cm
C = 28pi cm