Circumference
Circumference is the perimeter of what kind of shape?
Circle
Calculate the area of a circle with a radius of 2 cm.
Round to the nearest tenth.
Don't forget the units! Area is always squared!
12.6 cm2
A parallelogram has a base of 3 cm and a height of 5 cm. What is the area of the parallelogram?
15 cm2
A triangle has a base and a height.
a) True
b) False
a) True
A circle's central angles sum to ___________ degrees.
a) 180
b) 240
c) 360
c) 360
Calculate the circumference of a circle with a diameter of 4 m.
Round to the nearest tenth.
Don't forget the units!
12.6 m
Calculate the area of a circle with a radius of 4 ft.
Round to the nearest tenth.
Don't forget the units! Area is always squared!
50.2 ft2
The height in a parallelogram will make a ________ degree angle with the base.
a) 90
b) 180
c) 270
a) 90
The height of a triangle will make a ________ degree angle with the base.
a) 60
b) 90
c) 180
b) 90
If the radius of a circle is 7 m, what is the diameter?
Don't forget the units!
14 m
Calculate the circumference of a circle with a radius of 5 m.
Round to the nearest tenth.
Don't forget the units!
31.4 m
Calculate the area of a circle with a radius of 6 cm.
Round to the nearest tenth.
Don't forget the units! Area is always squared!
113.0 cm2
Find the area of a parallelogram with a base = 8 cm, height = 3 cm, and slant = 4 cm.
Don't forget the units! Area is always squared!
24 cm2
Find the area of a triangle with a base of 4 cm and a height of 8 cm.
Don't forget the units! Area is always squared!
16 cm2
If the diameter of a circle is 26 ft, how long is the radius?
Don't forget the units!
13 ft
Calculate the circumference of a circle with a diameter of 15.7 cm.
Round to the nearest tenth.
Don't forget the units!
49.3 cm
Calculate the area of a circle with a diameter of 24 m.
Round to the nearest tenth.
Don't forget the units! Area is always squared!
452.2 m2
Find the area of a parallelogram with a base = 10 cm, height = 5 cm, and slant = 8 cm.
Don't forget the units! Area is always squared!
50 cm2
Find the area of a triangle with a base of 10 cm and a height of 9 cm.
Don't forget the units! Area is always squared!
45 cm2
The circumference of a circle is approximately ___________ times greater than the diameter.
three
Calculate the circumference of a circle with a radius of 62.8 ft.
Round to the nearest tenth.
Don't forget the units!
394.4 ft
The diameter of a circle is 52 cm. What is the area?
Round to the nearest tenth.
Don't forget the units!
2122.6 cm2
The area of a parallelogram is 20 m2; if the height is 4 m, what is the base?
Don't forget the units! Base is not squared!
5 m
A triangle has a base of 36 m and a height of 13 m. What is its area?
Round your answer to the nearest tenth.
REMEMBER THE UNITS
234 m2
What ratio does pi represent?
(Hint: What two things do you divide do get pi?)
circumference/diameter