Rectangles
A rectangle has a length of 4 and width of 5. What is the area?
20 unit squares
A parallelogram has a base of 4 and height of 5. What is the area?
20
A triangle has a base of 3 and height of 2. What is the area?
3
4 x 7
28
What is the formula for area of a rectangle?
length x width
A rectangle has a length of 7 and width of 4. What is the area?
28
A parallelogram has a base of 3 and height of 2. What is the area?
6
A triangle has a base of 5 and height of 4. What is the area?
10
9 x 3
27
What is the formula for the area of a parallelogram?
base x height
A rectangle has a length of 3 cm and width of 12 cm. What is the area?
36 cm2
A parallelogram has a base of 3 cm and height of 7 cm. What is the area?
21 cm2
A triangle has a base of 9 in and height of 4 in. What is the area?
18 in2
12 x 6
72
What is the formula for the area of a triangle?
1/2 (b x h)
(b x h)/2
A rectangle has a length of 12 in and width of 5 in. What is the area?
60 in2
A parallelogram has a base of 5 in and area of 60 in2. What is the height?
12 in
A triangle has a base of 7 ft and height of 6 ft. What is the area?
21 ft2
98/7
14
What is the addition strategy for finding area of a polygon?
Decompose the polygon into smaller parts.
Calculate the area of each part.
Add all the area together.
A rectangle has a length of 12 ft and width of 11 ft. What is the area?
132 ft2
A parallelogram has an area of 50 ft2 and height of 5 ft. What is the base?
10 ft
A triangle has a base of 11 cm and height of 3 cm. What is the area?
16.5 cm2
111/3
37
What is the subtraction strategy for finding area of a polygon?
Draw a rectangle around the polygon.
Calculate the area of each shape.
Subtract the areas.