Perimeter & Area (Scale Factors)

Multiple Choice

What is the perimeter of this rectangle?

• 17 cm

• 34 cm

• 60 cm

• 32 cm

Multiple Choice

What is the missing measurement? 

• 9 cm

• 18 in

• 18 cm

• 9 in 

Multiple Choice

Find the area.

• 21 ft²

• 180 ft²

• 42 ft²

• 90 ft²

Multiple Choice

Find the area of the rectangle.

• 140 cm²

• 70 cm²

• 34 cm²

• 64 cm²

Multiple Choice

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

• 21

• 1.25

• 20

• 4

Multiple Choice

what is the length of x?

• 9mm

• 4mm

• 4/9mm

• 36mm

Multiple Choice

What is the scale factor?

• 6

• 4

• 2.5

• 1.5

​​Perimeter

​​Area

Multiple Choice

The original perimeter of a rectangle is 30cm, if we enlarge it by a scale factor of 4 what is the new perimeter?

• 120

• 480

• 1920

Multiple Choice

If the perimeter of a rectangle was 20in and now it is is 80in, what is the scale factor that was used?

• 4

• 2

• 40

• 20

Multiple Choice

If both dimensions of a rectangle are doubled, then which of the following statements about its perimeter will be true?

• The new perimeter will be 3 times the old perimeter.

• The new perimeter will be double the old perimeter.

• The new perimeter will be 4 times the old perimeter.

• The new perimeter will be 1/2 the old perimeter.

Multiple Choice

If a square's side lengths enlarged by a SF of 2, then which of the following statements about its area will be true?

• The new area will be 4 times the old area.

• The new area will be 16 times the old area.

• The new area will be 1/4 of the old area.

• The new area will be 2 times the old area.

Multiple Choice

The original area of a rectangle is 30cm, if we enlarge it by a scale factor of 4 what is the new perimeter?

• 120

• 480

• 1920

Multiple Choice

If a triangle is enlarged by a scale factor of 3/2, then which of the following statements about its perimeter will be true?

• The new perimeter will be 3/2 times the old perimeter.

• The new perimeter will be 1/2 of the old perimeter.

• The new perimeter will be 3 times the old perimeter

• The new perimeter will be 4 times the old perimeter

Multiple Choice

If a square's side lengths are doubled, then which of the following statements about its area will be true?

• The new area will be 4 times the old area.

• The new area will be 16 times the old area.

• The new area will be 1/4 of the old area.

• The new area will be 2 times the old area.

Multiple Choice

A rectangle that is 2 inches by 3 inches has been scaled by a factor of 7

 

What is the perimeter of the scaled copy?

• 35 in

• 10 in

• 70 in

• 490in

Multiple Choice

A rectangle has the dimensions 4cm by 5cm. A scale factor of 3 is used to enlarge the rectangle. What is the new area?

• 20 cm²

• 60 cm²

• 180 cm²

• 100 cm²

Multiple Choice

A rectangle that is 2 inches by 3 inches has been scaled by a factor of 7

 What is the area of the scaled copy?

• 20 sq in

• 42 sq in

• 49 sq in

• 294 sq in

Multiple Choice

The side length of a smaller square is one-third the side length of a larger square. Which of the following statements describes the area of the smaller square?

• The area of the smaller square is $$\frac{1}{27}$$ the area of the larger squre.

• The area of the smaller square is $$\frac{1}{6}$$ the area of the larger square.

• The area of the smaller square is $$\frac{1}{9}$$ the area of the larger square.

• The area of the smaller square is $$\frac{1}{3}$$ the area of the larger square.