Circles
Area
Area/Composite Figures
Vocabulary
Formulas
100
Area? (π = 3.14) Formula: πr2
153.86 square inches/ in2
100
What is the area of a triangle with a base of 20 and a height of 6?
What is 60 square units?
100
Area of a triangle with a base of 10cm and height of 5cm?
25 square cm
100
A figure made up of 2 or more shapes
Composite shape/figure
100
Formula for a square
side x side or s2
200
Circumference? (π = 3.14) (Formula: 2πr)
25.12 meters
200
Area of a trapezoid with b1 = 15, b2 = 7, and the height is 16?
What is 176 square units?
200
Area of entire figure. π = 3.14
What is 26.13 square centimeters?
200
Angles with the sum of 90 degrees
Complementary
200
Formula for rectangles and parallelograms
bxh or lxw
300
Area? (π = 3.14) (Formula: πr2)
254.34 in2
300
The area of a circle with a diameter of 15 ft. Round to the nearest hundredth place.
What is 176.63 square ft?
300
Area of a circle with a diameter 20in? ( π = 3.14)
314 square inches
300
(πr2)/2 is the formula for this.
Area of a semi-circle
300
Formula for a triangle
bxh/2 or (1/2)xbxh
400
area? (π = 3.14)
What is 113.04 square feet?
400
Area of a triangle with a base of 250 and height of 7.
875
400
Area of figure.
What is 248 square feet?
400
Half of the diameter is the___
Radius
400
Formula for a trapezoid
(b1+b2)x h/2
500
Area? (π = 3.14) (Formula: πr2)
628 square feet?
500
Area of a quarter-circle with a diameter of 25 inches.
122.6 square inches
500
Area of a trapezoid with a base1 of 10, base2 of 7, and height of 12 with a triangle with the base of 15 and height of 7.
104.5
500
Set of angles that have a sum of 180 degrees
Supplementary Angles
500
Formula for a quarter-circles
πr2/4