Scale Drawings Area and Perimeter

The area of a rectangle was 1125 sq cm, and was reduced to 45 sq cm. What was the scale factor used to reduce the shape?

• 25

• 5

John made a wooden square box. All sides of the wooden box are 6 cm. If he wants to increase the length of all sides by a scale factor of 2, what is the area of the new box?

• 12

• 36

• 72

• 144

Andrew draws a scale drawing of his office. If each 5cm on the scale drawing equals 10ft, what are the actual dimensions of Andrew's office?

• 40ft, 60ft, 70ft, 60ft

• 2ft, 3ft, 3.5ft, 3ft

• 20ft, 30cm, 35ft, 30ft

• 8ft, 14ft, 12ft, 12ft

Logan made a treasure hunt map. The treasure is 25cm away from his location. If each 1cm on the scale drawing equals 5 meters, then how far is from the treasure?

• 125 centimeters

• 125 meters

• 125 kilometers

• 125 miles

What is the new perimeter if the rectangle is enlarged with a scale factor of 3?

• 40 cm

• 60 cm

• 80 cm

• 120 cm

A rectangular garden is 45 ft wide and 70 ft long. On a blueprint, the width is 9 in. Identify the length on the blueprint. 

• 7 in

• 9 in

• 12 in

• 14 in

• 1.2 km

• 4.3 km

• 5.8 km

• 8.4 km

• 1.5

• 6

• 8

• 10.7

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

Find y.

• 144

• 18

• 72

• 12