Circles
What is a radius?
The distance from the center to any point on the circle
A circle has a radius of 7cm, what is the area?
154cm2
44in
Composite Figure #1, what is the perimeter?
29.7ft
Composite Figure #1, what is the area?
63.25ft2
What is diameter
The distance across the circle that goes through the center.
A circle has a diameter of of 26in, what is the area?
530.66in2
A circle has a diameter of 6cm, what is the circumference?
18.84cm
Composite Figure #2, what is the perimeter?
12.56in
Composite Figure #2, what is the area?
10.28in2
What is Circumference?
Distance around the circle. (Perimeter)
A circle has a radius of 9mm, what is the area?
254mm2
A circle has a diameter of 2 meters, what is the circumference?
6.28m
Composite Figure #3, what is the perimeter?
26cm
Composite Figure #3, what is the area?
34cm2
A circle has a radius of 7cm, what is the diameter?
14cm
A semicircle has a radius of 20cm, what is the area?
628cm2
A semicircle has a diameter 6m, what is the perimeter?
9.42m
Composite Figure #4, what is the perimeter?
92m
Composite Figure #4, what is the area?
266m2
A circle has a circumference of 8.9mm, what is the radius?
1.42mm
A semicircle has a diameter of 24in, what is the area?
226.08in2
A semi circle has a radius of 15 in, what is the perimeter?
77.1in
Composite Figure #5, what is the perimeter?
57.96ft
Composite Figure #5, what is the area?
251.86ft2