Come to Terms
A straight line from the center to the edge of the circle.
What is radius?
Circumference
C=pid
Find the circumference of a circle with a diameter of 8 ft. In terms of pi
C=8pift
Find the area of a circle with a radius of 5 cm. In terms of pi
A=25picm^2
What is the area, in terms of pi, of a circle with a circumference of
6pift
A=9pift^2
How many degrees are in every triangle?
180 degrees
A straight line passing from side to side through the center of a circle.
What is diameter?
Area of a Circle
A=pir^2
Find the circumference of a circle with a diameter of 12 ft to the nearest tenth.
37.7 feet
Find the area of a circle with a radius of 16 inches to the nearest tenth.
804.2 in2
What is the area, to the nearest tenth, of a circle with a circumference of
8picm
50.3 cm2
If a triangle has 2 angles measuring 30 degrees and 70 degrees, how many degrees are in the third angle?
80 degrees
The distance around a circle.
What is circumference?
Diameter
d=2r
Find the circumference of a circle with a radius of 4.5 ft. In terms of pi
9pift
Find the area of a circle with a diameter of 3 ft. In terms of pi
A=3.0625pift^2
What is the area, to the nearest hundredth, of a circle with a circumference of
14.6pi feet
167.42 ft2
How many triangles can be created with the following degree measures:
40^o , 55^o, 100^o
0 Triangles (not possible!)
The space inside a circle.
What is area?
Radius
r=d/2
Find the circumference of a circle with a radius of 13 ft to the nearest hundredths place.
81.68 feet
Find the area of a circle with a diameter of 11 cm to the nearest hundredths place.
95.03 cm2
What is the area, in terms of pi, of a circle with a circumference of
20.8pi m
108.16pi m^2
5ft , 17 ft, 13 ft
Are these possible side lengths for a triangle?
YES!
5 + 13 > 17
A straight line segment whose endpoints both lie on the edge of the circle.
What is a chord?
Degrees in a Triangle with angles measuring x, y, and z degrees.
x^o +y^o +z^o =180^o
Find the circumference of a circle with a radius of 1.2 ft, round to the nearest thousandths place.
7.540 feet
Find the area of a circle with a diameter of 10.2 in to the nearest thousandths.
81.713 in2
What is the area, to the nearest thousandths, of a circle with a circumference of
52pi ft
2123.717 ft2
Two sides of a triangle measure 10 cm and 18 cm.
What is a possible side length for the third side that would create one unique triangle?
8 cm to 28 cm (not including either one)