Indirect Measurement and Scale

Review the picture.  Find the missing side measurement in the picture using a proportion.

• w = 18 m

• w = 6 m

• 6 m

• w = 0.16 m

Using a proportion, find the height of the tree.

• x = 0.0625 ft.

• 16 ft

• x = 16 ft.

Review the picture.  Find the missing side measurement in the picture using a proportion.

• x = 900 m

• 25 m

• x = 25 m

• x = 0.04 m

Read the problem and find the missing measurement.  Use labels or pictures to help set up the problem.
A home's height is 40 ft. and casts a shadow that is 12 ft..  A car in the driveway is 10 ft. long.  How long is the car's shadow?

• x = 3 ft.

• 3 ft.

• x = 120 ft.

• x = 0.33 ft.

.  A drawing of an airplane has a scale of 1 cm :19 feet. If the airplane on the scale drawing is 2.5 centimeters long, find the length of the actual airplane.

• 3.8

• 4.75

• 47.5

• 475

In a photograph, a lighthouse has a scale of 27 centimeters high and 12 centimeters wide. If the actual lighthouse has a width of 8 meters, what is its actual height?

• 13.5 m

• 18.0 m

• 23.0 m

• 40.5 m

A 10-ft tree makes an 18-ft shadow. About how tall is a person who makes a 12-ft shadow at the same time?

• 4.0 ft

• 6.7 ft

• 12.9 ft

• 15.0 ft

Natasha stands 5.5 feet tall and has a shadow that measure 3 feet long. At the same time, a tree next to Natasha has a shadow that measures 12 feet long. How tall is the tree?

 

• 7 feet

• 15 feet

• 22 feet

• 40 feet

If a 12 ft tall building casts a 50 ft long shadow, then how long is the shadow that a 21 ft tall building casts?

• 87.5 ft

• 28.57 ft

• 5.04 ft

• 90 ft

Two similar rectangles are drawn at a scale of 1:3.  What is the area of the larger rectangle?