Parallelograms
How many sets of equal sides does a parallelogram have?
2 sets of equal sides.
What is the area of a square with a side length of
4.1 m?
4.1(4.1) = 16.81 m2
What is the area of a rectangle with a length of 12 and a width of 6?
A = L(W)
A = 12(6)
A = 72
What is the area of a triangle that has a base of 3 ft, a height of 6 ft and a side of 2 ft?
Hint: One of the measurements is unneeded information!
6(3)/2 = 9 ft2
What is the formula to find the area of a square?
L(W)
OR
S(S)
A parallelogram has a base of 7 m and a height of 6 m. What is the area?
A = BH
A = 7(6)
A = 42 m2
How many equal sides does a square have?
4
What is the area of a rectangle with a length of 4.2 in and a width of 7.6 in?
A= 4.2(7.6)
A= 31.92 in2
What is the area of a triangle with a height of 4.2 in and a base of 7.6 in?
7.6(4.2) / 2 = 15.96 in2
What is the formula to find the area of a parallelogram?
B(H)
A parallelogram has an area of 36.8 cm2. It also has a height of 6.4 cm. What is the base?
36.8 = B(6.4)
5.75 = B
Johnny has two walls he wants to paint that are in the shape of squares. One wall is in his kitchen and the other in his bedroom. One wall has a side length of 7 ft. The other wall has a side length of 10 ft. What is the total area of both walls?
72 + 102 = 149 ft2
What is the width of a rectangle that has an area of
40 cm2 and a length of 10 cm?
40 = 10(W)
4 = W
What is the Base of a triangle with a height of 10 and an area of 30?
30= 1/2(B)10
B=6
What is the formula to find the area of a rectangle?
L(W)
A parallelogram has two sets of equal sides:
True or False
True
What is the area of a square with a side of 3.3 km?
A = 3.32
A = 10.89 km2
How many sets of equal sides does a rectangle have?
2 sets of equal sides.
What is the area of a triangle with a base of 17 in and a height of 6 in?
A = 17(6) / 2
A = 51 in2
What is the formula to find the area of a triangle?
1/2B(H)
OR
B(H) / 2
A parallelogram has an area of 48 ft2.What are two answers that could describe the base and height?
a. 12(4) b. 6(3) c.8(6) d.10(4)
a. 12(4) = 48
c. 8(6) = 48
A map was made in the shape of a square. The map had an area of 36 cm2. What is the length of each side of the map?
6
Mike is growing a rectangular garden. The length of the garden is 8 ft long. The area of the garden is 48 ft2. What is the width of the garden?
48 = 8W
6 = W
What is the height of a triangle with an area of 25 ft2 and a base of 5 ft?
25= 5(H) / 2
H = 10
What process must we follow to find the area of a composite shape?
1. Split the composite shape into other shapes (squares, triangles, rectangles)
2. Find the missing side lengths
3. Find the total area