Formulas
Find It
Area
Simplifying rads
Circles
100
What is the formula for area of a triangle?
A = 1/2bh or A = bh/2
100
Find the area of the rectangle to the nearest 2 decimal places.
36.54 ft2
100
Find the area of the parallelogram with a base of 10m and a height of 12m. Round to the hundredths place if necessary.
120m2
100
Simplify: sqrt(48)
4sqrt(3)
100
What's the relationship between a radius, diameter, and circumference of a circle?
radius: center of circle to edge
diameter: twice the radius
circumference: pi * diameter
200
What is the Area formula for a rectangle?
A = bh
200
Find the area of the triangle.
216 yds2
200
What is the area of a triangle if the base is 3.5 cm and the height is 7 cm? Round to the hundredths place.
A = 12.25 cm2
200
What's the length of the long leg of a 30-60-90 triangle with a hypotenuse of 18sqrt(3) ?
27
200
What's the difference between a sector and a segment?
Sector: "slice of pie" determined by a central angle
Segment: sector cut off by a chord connecting two points on the circumference
300
Area of a Parallelogram
A = bh
300
Find the area of the parallelogram with a base of 13.5m and a height of 12.5m
A = 168.75 m2
300
Find the area of the unshaded area.
A = 39 ft2
300
8/sqrt(3) * sqrt(5)/2
(4sqrt(15))/3
300
Find the area of the shaded sector. Leave your answer in terms of pi.
(5pi)/3
400
What is the formula to find the area of a regular polygon?
A = 1/2 ap
400
What is the area of a triangle if the base is 5 cm and the height is 10 cm?
A = 25 cm2
400
What is the area of a 45-45-90 triangle with hypotenuse 44sqrt(2) ?
A = 968 units2
400
Simplify: (7sqrt(22))/sqrt11 div sqrt 6
(7sqrt3) / 3
400
A = 33.76 ft2
500
What is the formula for area of a circle?
A= pi r2
500
ind the area of the trapezoid shown.
A = 1,560 ft2
500
What's the area of this triangle? Round to the nearest hundredth.
A = 88.47 units2
500
Simplify: (2sqrt7)*(3sqrt7)
42
500
Is this circle larger or smaller than a 10x11cm rectangle? What are their respective areas (round to hundredths)?
Larger;
113.04 cm2
110cm2
1000
What's the area formula for a kite?
A = 1/2 d1 d2
1000
A = 136 cm2
1000
What's the area of a regular decagon with side length 3? Round to the nearest hundredth.
A = 69.3 units2
1000
(-2sqrt2)^2
8
1000
What is the radius of a regular polygon? What relationship does it have to the radius of a circle?
A regular polygon's radius is the distance from the center of the polygon to a vertex. It is the same distance as the radius of the circle that circumscribes the polygon.