What is the area of the real object that the scale drawing models???

D. 40 cm^2

Step-by-step explanation:

The scale factor is a ratio of linear dimensions. The real object's linear dimensions are 2 times the size of the corresponding dimensions in the drawing. For example the length of the object is twice the length of the scale drawing.

The ratio of the areas is the square of the ratio of the linear dimensions.

linear scale factor    1:2

ratio of areas   (1:2)^2 = 1:4

The area of the object is 4 times the area of the scale drawing.

A = 4 * 10 cm^2 = 40 cm^2

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.