Area Formulas
Rectangles, Squares, & Parallelograms
Triangles
Regular Polygons & Composite Figures
Area & Perimeter on the Coordinate Plane
100
What is the area formula for a rectangle?
A = LxW or bxh
100
Find the area of the rectangle with a length of 8cm and a width of 5 cm.
A = 40cm2
100
Find the area of a right triangle with the base of 13ft, and the height of 4ft.
A=26 ft2
100
Find the perimeter of the composite shape.
P=30 ft
100
What is the length & width of this rectangle?
Length= 4 units
Width= 3 units
200
What is the area formula for a parallelogram?
A = bh
200
Find the area of a square that has a side length of 12cm.
A= 144 cm2
200
Find the area of a triangle with base 7.2 cm and height 8 cm.
A = 28.8cm2
200
Find the area of the hexagon.
A = 210 cm squared
200
Find the area of the figure.
A=4 un2
300
How do you find the area of a triangle?
A=(b*h)/2
300
A parallelogram has an area of 17.68 square inches. The base is 5.2 inches. What is the height?
H= 3.4 inches
300
Find the area of a triangle with base 7.2 cm and height 8 cm.
A = 28.8cm2
300
Find the area of the composite shape.
A=34 ft2
300
Find the area of the figure.
A=30 un2
400
Describe the steps for finding the area of a polygon (composite shape)
1. Break into triangles/rectangles/parallelograms
2. Find the area of each shape
3. Add the areas together
400
A bathroom floor has 30 tiles that are shaped like a parallelogram. Each tile has a base of 11.5 inches and a height of 10.5 inches.
What is the total area of the bathroom floor?
Each tile: 11.5 x 10.5 = 120.75 sq inches
120.75 x 30 tiles = 3622.5 square inches
400
Find the area of a triangle that has a base of 5 and 1/5 cm and a height of 7 cm. Write your answer as a mixed number is simplest form.
b x h is 36 and 2/5 cm squared
divided by two is 18 and 1/5
400
Find the area of the composite figure.
A=136 cm2
400
There is one point on the coordinate plane at (12, 15). If the point is reflected over the y-axis, where will the point be now?
(-12, 15)
500
A rectangle has a length of 3 2/3 ft. and a width of 2 3/5 feet. What is the area of the rectangle?
Write your answer as a mixed number is simplest form.
A = 6 and 14/15
500
What is the height of a triangle that has an area of 33.8 square m and a base of 5.2 m?
h = 13 meters