Randoms
Area of Shapes
Circles!
MORE Circles
Area of Circles
100
What is the value of pi we used in class?
3.14
100
A square has one side measuring 5 feet. What is its area?
25 square feet
100
The diameter of Circle A is 14 units. What is the radius?
7 units
100
The radius of Circle B is 14 units. What is the diameter?
28 units
100
Radius of a circle is 10 feet; what's the area?
314 square feet
200
What is the formula for circumference?
C = 2 * pi * r
200
A triangle has a base of 6 inches and a height of 9 inches. What is its area?
27 square inches
200
Draw a circle and label the following correctly.
Circumference
radius
diameter
center
200
What is the circumference of a circle that has a diameter of 9 units?
28.26 units
200
Radius of a circle is 12.5 m; what is the area? (round to nearest whole number)
491 square meters
300
What is the formula for finding the area of a circle?
A = pi * r2
300
What is the area of a rectangle whose given side lengths are 8 cm and 12 cm?
96 square cm
300
A circle has a diameter of 15 units. What is the area? (Round to the nearest hundredth)
176.63 square units
300
The radius of a circle is 128.4 in what is the area of the circle?
51,767.7984 inches squared
300
Diameter of a circle is 100 m; what is the area?
7850 square meters
400
What is Ms. Esparza's favorite store?
COSTCOOOOO
400
Name the formulas from memory.
Area of rectangle
Area of triangle
Area of square
Area of rectangle = b * h
Area of triangle = 0.5 * b * h
Area of square = s * s = s2
400
A circle has a diameter of 8 cm. What is the circumference?
25.12 cm
400
If the radius is 4 cm. Find the diameter, find the circumference, find the area.
diameter = 8cm
circumference = 25.12 cm
Area = 50.24 cm2
400
A circle's circumference is 125.6 ft.
What is the circle's diameter?
40 feet
500
The diameter is _________ the radius.
The radius is _____________ of the diameter.
The diameter is DOUBLE the radius.
The radius is HALf of the diameter.
500
What is the area of a circle whose diameter is 12cm?
113.04 cm squared
500
The CIRCUMFERENCE of a circle is 37.68 units squared.
hint: must find area first
What is the area of the circle?
113.04 square units
500
What is the area of a circle that has a diameter of 14 units?
153.86 square units
500
A round jar lid has a radius of 2 inches. What is the lid's circumference?
12.56 inches