Scale Drawings and Area

Question 1

Which ratios can be used to find the scale factor? Check all that apply.

Revolt · Accepted Answer

A: ; C:

Question 2

Question 2

Revolt · Accepted Answer

.: 2; .: 19; times the area of the original figure.: 4

Question 3

The scale factor is ½✔ 234.5.

Revolt · Accepted Answer

B: ✔ 2

Question 4

The perimeter of the enlarged rectangle can be found by multiplying the scale factor and the original perimeter to get 4.759.518✔ 19.

Revolt · Accepted Answer

D: ✔ 19

Question 5

The area of the scale model is 23✔ 4 times the area of the original figure.

Revolt · Accepted Answer

C: ✔ 4

Question 6

Maria solved the area problem below. What was her error?

Revolt · Accepted Answer

B: She forgot to square the scale factor.

Question 7

Which statements describe true relationships? Check all that apply.

Revolt · Accepted Answer

A: The enlarged area is 4 times the original area, which is the square of the scale factor.; C: The enlarged perimeter is 2 times the original perimeter, which is the scale factor.; D: The perimeter is proportional to the scale factor and the area is proportional to the square of the scale factor.

Question 8

What is the area of the enlarged triangle? 37.5 112.50✔ 281.25562.5 cm

Revolt · Accepted Answer

C: ✔ 281.25

Question 9

A backyard is 40.5 feet long and 25 feet wide. In order to install a pool, the yard needs to be reduced by a scale of . What is the area of the reduced yard? feet2

Revolt · Accepted Answer

112.5

Question 10

✔ 25 49 175 196 mm

Revolt · Accepted Answer

A: ✔ 25

Scale Drawings and Area Answers

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