9.2.1 Review Preview (Does surface area affect volume?)
Please enter your answers from the 9.2.1 Review Preview. Pay attention to any notes on the problems.
9-41: Read the Methods & Meanings box in this lesson. Use the information to determine whether each shape is a polygon.
In each blank enter polygon or not polygon
a.
b.
c.
d.
9-42: What is the volume and surface area of each shape? Assume that the edge of each cube measures 1 inch. Make sure to label!
a.
Volume
Surface Area
9-42: What is the volume and surface area of each shape? Assume that the edge of each cube measures 1 inch. Make sure to label!
b.
Volume
Surface Area
9-42: What is the volume and surface area of each shape? Assume that the edge of each cube measures 1 inch. Make sure to label!
c.
Volume
Surface Area
9-43: Red Apples cost $1.20 per pound, and green apples cost $1.50 per pound.
a. Write an expression to represent the total cost of x pounds of red apples and y pounds of green apples. (In your expression put x first!)
9-43: Red Apples cost $1.20 per pound, and green apples cost $1.50 per pound.
b. What is the total cost if you buy 3 pounds of red apples and 2 pounds of green apples? (don't forget your $ sign)
9-44: Ellen is building a scale model of a space shuttle. A space shuttle is approximately 122 feet long and has a wingspan of 78 feet.
a. How many inches long is the space shuttle? (label)
9-44: Ellen is building a scale model of a space shuttle. A space shuttle is approximately 122 feet long and has a wingspan of 78 feet.
b. Ellen plans to build her model so that 1 cm. on the model represents 10 inches on the space shuttle. Write a proportion to show this relationship for the length of her model. How long will her model be (in centimeters).
Proportion
Length
9-44: Ellen is building a scale model of a space shuttle. A space shuttle is approximately 122 feet long and has a wingspan of 78 feet.
c. Write and solve a proportion to determine her model's wingspan(in centimeters)
Proportion
Wingspan
9-44: Ellen is building a scale model of a space shuttle. A space shuttle is approximately 122 feet long and has a wingspan of 78 feet.
d. Remember that 1 inch is equal to 2.54 cm. How many inches long will her model be?
9-45: What are the area and circumference of a circle with a radius of 7 cm?
Area
Circumference
9-46: Determine the area and perimeter of each shape.
a. Shape a - All angles are right angles.
Area
Perimeter
9-46: Determine the area and perimeter of each shape.
b. Shape b
Area
Perimeter