Skyscrapers (continued) Team G

Skyscrapers Team G

Before You Start

You are an intern at an architecture firm. . You will help the architects study skyscrapers around the world and assist with making scale models of the buildings.

Activity

Building / Country / Height (ft)
Burj Khalifa / Dubai / 2,717
Taipei 101 Tower / Taiwan / 1,667
Shanghai World Financial Center / China / 1,614
Petronas Twin Towers / Malaysia / 1,483
Nanjing Greenland Financial Center / China / 1,476

You investigate several of the tallest buildings in the world and collect the
data shown in the table at the right.

1. a. Write a ratio of the height of Burj Khalifa to the height of Petronas Twin Towers.

b. Write this ratio as a decimal to the
nearest hundredth. Explain what the decimal means.

Building / City / Height (ft)
Willis Tower / Chicago / 1,451
Trump Tower / Chicago / 1,389
Empire State Building / New York City / 1,250
Bank of America Tower / New York City / 1,200
John Hancock Center / Chicago / 1,128
Chrysler Building / New York City / 1,046

c. There are 5,280 feet in one mile. Express the height of Shanghai World Financial Center to the nearest hundredth mile.

You also find data for some of the tallest skyscrapers in the United States.

2. a. The Willis Tower is about how many times as tall as the John Hancock Center? Round to the nearest tenth.

b. Which international building from Question 1 is about 1.6 times as tall as the Chrysler Building?

You also help three architects build scale models of the Chicago buildings. The architects want to know which scale factors to use.
Write the scale factors as decimals. If necessary, round to the nearest
ten thousandth.

3. a. The architect for the Willis Tower model wants her model to be
3 ft tall. Write a ratio of the height of the model to the height of the
actual building.

b. The architect for the Trump Tower model wants his model to be
3.75 ft tall. Write a ratio of the height of the model to the height of
the actual building.

c. The architect for the John Hancock Center model wants her model to be 1.75 ft tall. Write a ratio of the height of the model to the height of the actual building.

4. Your boss would like the models to be at least 0.002 times the size of the actual building. Which models meet this requirement?

5. Quick ReportUse your results from this activity to complete the report below. Only include the Chicago buildings in the table.

Building Model / Scale Factor / Meets Requirement?

6. ReflectExplain how you used each skill in this activity.

a. writing rational numbers as decimals

b. comparing and ordering decimals

– grade 8 • Readiness Lesson

2

Name ______Class ______Date ______

Renting Movies (continued) Team G

– grade 6 • Readiness Lesson

3