Formulas
Squares
Rectangles
Triangles
Trapezoid
100

The formula for area of a rectangle

A=b*h 

100

Area for a square with a side length of 5 cm.  

25 cm2

100

Area for a rectangle with base of 4 in.  height of 6 in

24 in.2

100

Area of a triangle with a base of 5 in and a height of 8 in.  

20 in2

100

Area of a trapezoid with bases of 5 cm and 12 cm.  And a height of 6 cm.  

51 cm2

200

The formula for area of a square

A=b*h   

or 

A=s2

200

Area for a square with side length 7cm

49cm2

200

Area for a rectangle with base of 7 in.  height of 3 in

21 in2

200

Area of a triangle with a base of 12 in and a height of 3 in.  

18 in2

200

Area of a trapezoid with bases of 7 cm and 13 cm.  And a height of 9 cm.  

90 cm2

300
The formula for area of a triangle

A=(1/2)*b*h  

300

Area for a square with side length 13 in 

169in2

300

Area for a rectangle with base of 14 ft.  height of 12 ft

168 ft2

300

Area of a triangle with a base of 6.5 in and a height of 10 in.  

32.5 in2

300

Area of a trapezoid with bases of 5.5 cm and 12.5 cm.  And a height of 6 cm.  

54 cm2

400

The formula for area of a trapezoid.

A=(1/2)(b1+b2) *h  

400

Area for a square with side length 7.4 ft.  

54.76 ft2

400

Area for a rectangle with base of 4.5 in.  height of 6 in

27 in2

400

Area of a triangle with a base of 5 in and a height of 9 in.  

22.5 in2

400

Area of a trapezoid with bases of 5 cm and 12 cm.  And a height of 7 cm.  

59.5 cm2

500

The formula for area of a parallelogram. 

A=b*h

500

Area for a square with side length14.23 ft.  

202.4929 ft.2

500

Area for a rectangle with base of 4.25 in.    height of 6.3 in

26.775 in2
500

Area of a triangle with a base of 6.5 in and a height of 8.4 in.  

27.3 in2

500

Area of a trapezoid with bases of 6.4 cm and 14.7 cm.  And a height of 6.3 cm.  

66.465 cm2

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