Area
What is the area of a parallelogram that has base length of 9 inches and height of 8 inches?
Area= 72 in squared
A rectangular prism has dimensions 3 cm by 4 cm by 6 cm. What is the Surface area?
Hint: How many faces does a rectangular prism have?
Quadrilateral EFGH is a scaled copy of ABCD. Each length in EFGH is 3 times the corresponding length in ABCD. Segment AB is 7 units. What is the length of EF?
21 units
The scale on one map is 1 cm to 8 km. The distance between two towns is 32 cm. What is the actual distance in km?
256 km
How do we find area of polygons?
LxW or BxH
A triangle has a height of 7 cm and a base of 5 cm. What is the area of the triangle?
Area= 17.5 cm squared
A cube has a side length of 7 inches. Select all expressions that represent its volume in cubic inches.
A. 72
B. 73
C. 6 X 72
D. 7 X 7 X 7
B, D
A scale drawing of a rectangle park is 4 inches wide and 6 inches long. The actual park is 240 yards long. What is the actual width, in yards?
160 yards wide
A drawing of a building has a scale of 1 inch to 25 feet. The drawing shows the building as 6 inches tall. What is the actual height?
150 feet tall
What does corresponding mean in terms of scaled copies?
The sides of both the original and copy figure that match
A square has a side length of 12 cm. What is its area?
Area= 144 cm squared
A rectangular prism has dimensions 2 cm by 5 cm by 8 cm. What is its surface area?
Surface Area= 132 cm sq
A model boat uses a scale of 2 inches=24 feet. The model is 9 inches long. What is the actual length of the boat?
108 feet long
Triangle ABC is a scaled copy of triangle DEF. Segment AB corresponds to DE. If AB= 10 units and DE= 25 units, what is the scale factor from ABC to DEF?
How do we find surface area of 3 dimensional shapes?
Hint: There are 3 main steps I need to do to solve.
Step 1: Determine how many faces the figure has.
Step 2: Determine the area of each face.
Step 3: Add all areas together to find surface area.
Find the area of a triangle with a base of 14 inches and a height of 9 inches.
Area= 38 inches squared
A rectangular prism has dimensions 3 ft by 4 ft by 9 ft. What is the volume?
Volume=108 ft cubed
A scale drawing uses 1 inch=12 feet. A building is 5 inches tall in the drawing. How tall is the actual drawing?
60 feet tall.
A rectangle is enlarged by a scale factor of 4. Its original area is 15 square units. What is the area of the enlarged rectangle?
Area= 60 square units
What is a net?
Unfolded 3D shape that shows the faces
A figure is made from a rectangle that is 10 ft by 6 ft and a triangle with a base of 10 ft and a height of 4 ft on top. What is the total area?
Hint: You have to DECOMPOSE the figure.
Area= 80 Ft Sq
A net is made of 6 rectangles. The three pairs of face areas are 18 cm sq, 24 cm sq, and 30 cm sq. What is the surface area of the rectangular prism?
Surface area= 144 cm sq
A map uses a scale of 4 cm= 10 km. What distance on the map would represent 35 km?
14 cm
A rectangle is enlarged by a scale factor of 3. Its original length is 8 units and its original width is 5 units. What are the new length, width, and area?
Length: 24 units
Width: 15 units
Area: 288 sq units
How can we use a Map Scale (ex. 1 inches= 12 feet) from a drawing to determine the realistic size of things?
We convert the smaller units into the larger units to find more realistic measurements