Formulas
Mix it up
Trapezoids
Triangles
Parallelograms
100
What is the formula for area of a triangle?
A = 1/2bh or A = bh/2
100
What is the area of this triangle to the nearest tenth?
A = 10.3 ft2
100
A trapezoid can be broken down into these 2 types of shapes...
A rectangle and Triangles
100
What is the are of a triangle with a base of 4m and a height of 7m?
The area is 14m2
100
441 ft2
200
How to find the area of a trapezoid?
Break into a rectangle in the middle and do bxh. Then break the sides into triangles and do bxh then divide by 2.
1/2h(b1 + b2)
200
Create a triangle that has an area of 30 ft2
(Must be checked by teacher
200
Find the area of the trapezoid with a height of 3in and bases measuring 13in and 7in.
(Draw on the board for them to see)
30in2
200
Find the area of the triangle.
24 cm2
200
What is the area of the parallelogram?
300
300
Area of a Parallelogram
A = bh
300
Create a parallelogram that has an area of 100 yd2
Teacher checks
300
What is the area of a trapezoid when it has bases of 4 inches and 11 inches and a height of 10 inches?
Draw on the board please.
Area = 75 inches2
300
Find the area of the triangle.
6 in2
300
40 feet
400
What TWO formulas would you use to find the area of this composite figure?
A = bh/2 or A = 1/2bh
A = bh
400
Find the area of the rectangle to the nearest hundredth.
36.54 ft2
400
Find the area of the trapezoid with a height of 5.2in and bases measuring 11in and 24in.
91in2
400
Find the area of the triangle.
21 in2
400
Find the area of the parallelogram with a base of 13.5m and a height of 12.5m
168.75m2
500
What is the formula for the area of a rectangle?
A = bh
500
The area of a square is 225 cm2, what is the perimeter?
The perimeter is 60 cm.
500
What is the area???
60 m2
500
What is the height of a triangle whose area is 20cm2 and base is 10cm?
h = 4cm
500
If a rectangle has an area of 162ft2 and a width of 9ft find its length.
18ft.