Radius and Diameter
Formulas
Perimeter of Composite Figures
Area of a Circle
Circumference of a Circle
100
Find the radius of the image. 
10 inches
100
The formula for Area of a Circle
A = 𝝅r2
100
A rectangular park is 10 feet long and 20 feet wide. What is the total length of the fence needed?
60 feet
100
Find the Area of circle with a diameter of 14 cm.
153.86 cm2
100
Find the Circumference of a circle with a diameter of 12 in.
37.68 in
200
Find the diameter of a circle with radius of 7 meters.
14 meters
200
Formula for Circumference of a Circle when you have the diameter
C = 𝝅d
200
A square room has a side length of 4m. What is the perimeter?
16m
200
Find the Area of circle with radius of 13 in.
530.66 in2
200
Find the Circumference of a circle with a radius of 7 units
43.98 units
300
Find the radius of a circle with Area of 153.86 sq. ft.
7 feet
300
Formula for Circumference of a Circle when you have the radius
C = 2𝝅r
300
A cell phone screen is 3 inches wide and 6 inches tall. What is its perimeter?
18 inches
300
Find the Circumference of a circle with Area of 706.5 sq. ft.
94.2 ft.
300
Find the perimeter of the semicircular image.
25.7 cm.
400
Find the diameter of circle with a radius of 2 centimeters.
4 centimeters
400
Formula for Area of a Rectangle (and Square)
A = l x w OR A = bh
400
A piece of paper is 8 inches wide and 11 inches tall. What is its perimeter?
38 inches
400
Find the Area of a circle with a diameter of 10 rounded to the nearest whole number.
79 units2
400
Find the perimeter of the semicircle with radius of 8.5 ft.
43.69 ft
500
POP QUIZ: What is the name of Ms. Malkiewicz's dog?
Clark!
500
How do you find the perimeter of a Composite Figure? (not a "formula")
Add all of the sides together
500
A 2-centimeter-by-7-centimeter piece of wood. What is its perimeter?
18 centimeters
500
Find the Area of a circle whose diameter is 21mm.
346.185
500
The radius of a circle is 4 cm. What is the circumference?
25.13cm