Computing Actual Areas from a Scale Drawing

What is the purpose of computing actual lengths and areas from a scale drawing?

• To practice multiplication and division skills.

• To determine the accuracy of the scale drawing.

• To make accurate measurements in real-world situations

• To create a proportional relationship between length and area

A scale drawing of a house shows 9cm ×10cm. If 6cm=12 ft, what are the actual dimensions?

• 9ft x 10ft

• 1ft x 2ft

• 12ft x 6ft

• 18ft x 20ft

A scale drawing of a rectangular park is 5 inches wide and 7 inches long. The actual park is 280 yards long. How wide is the actual park?

• 40 yd

• 56 yd

• 200 yd

• 378 yd

The scale model of a building is 6.5 inches tall. How tall is the actual building if the scale used for the model is 1 inch = 150 feet?

• 650 feet

• 840 feet

• 900 feet

• 975 feet

Katherine made a scale drawing of her bedroom shown below. She used a scale of 1 cm = 3 ft. What is the area of Katherine’s actual bedroom?

What is the actual area of ground, in square feet, for growing vegetables?

• 4,950 square feet

• 145 square feet

• 2.02 square feet

• 495 square feet

The scale drawing for Zoe's room is shown. If 1 in on the scale drawing equals 3 feet. What is the area for Zoe's room?

• 49  square feet

• 132 square feet

• 126 square feet

• 14 square feet

What is the area in square feet of the actual piece of land?

• 36 square feet

• 54 square feet

• 5,184 square feet

• 7,776 square feet

Each inch in the picture represents 8 feet on the actual square shaped flag. What is the area of the actual flag?

The two rectangles are scale drawings. What is the measurement of x?

• 21

• 1.25

• 20

• 4