Base or Height?
Find the Area
Don't Get Tricket!
Rectangle or Parallelogram?
Area Grab Bag
100
A parallelogram has a bottom side of 8 cm, a perpendicular height of 4 cm, and a slanted side of 5 cm. What is the base?
8 cm
100
Find the area: base = 6 cm, height = 4 cm.
24 cm2
100
Base = 10 cm, height = 4 cm, slanted side = 6 cm. Which two measurements should you multiply?
10 cm and 4 cm.
100
A rectangle and a parallelogram both have base 5 units and height 4 units. Which has greater area?
Neither. Both have area 20 square units.
100
What formula finds the area of a parallelogram?
A = bh
200
A parallelogram has a base of 12 m, a perpendicular height of 7 m, and a slanted side of 9 m. What is the height?
7 m
200
Find the area: base = 9 m, height = 5 m.
45 m2
200
Base = 7 m, height = 5 m, slanted side = 8 m. Find the area.
35 m2
200
True or False: A rectangle and a parallelogram use the same area formula, A = bh.
True
200
What kind of angle should the height make with the base?
A 90-degree angle (right angle).
300
Which labeled measurement is the height?
6 ft
300
Find the area: base = 12 ft, height = 7 ft.
84 ft2
300
A student calculates 12 x 10 for a parallelogram with base 12 ft, height 6 ft, and slanted side 10 ft. What is the mistake?
The student used the slanted side instead of the perpendicular height.
300
A rectangle and a parallelogram both have base 8 units and height 6 units. Find both areas.
48 units2
300
What units should be used for the area of a parallelogram measured in centimeters?
cm2
400
Can either pair of opposite sides of a parallelogram be chosen as the bases?
Yes, as long as you use the corresponding perpendicular height.
400
Find the area: base = 8.5 cm, height = 4 cm.
34 cm2
400
Base = 9 cm, outside perpendicular height = 7 cm, slanted side = 8 cm. Find the area.
63 cm2
400
If you cut a triangle from one side of a parallelogram and move it to the other side to make a rectangle, does the area change?
No. No area is added or removed.
400
Maya writes A = 7(4) = 28 cm. What is wrong with her answer?
The area should be labeled cm2.
500
True or False: The longest side of a parallelogram is always the base.
False
500
Find the area: base = 6.5 m, height = 3.2 m.
20.8 m2
500
Jordan says, 'The slanted side is 11 in, so it must be the height because it is a side.' Is Jordan correct?
Explain.
No. The height must be perpendicular to the chosen base.
500
Explain why a rectangle and parallelogram with the same base and height have the same area.
A parallelogram can be rearranged into a rectangle without adding or removing area; both use A = bh.
500
A parallelogram has base 9 cm and area of 54 square cm. Which could be its height: 5 cm, 6 cm, or 7 cm?
6 cm