The area of a rectangle is 100cm2. After a dilation, the area is 25cm2. What is the scale factor? You may give your answer as a fraction or decimal

1/4 or 0.25

Step-by-step explanation:

Initial area of the rectangle = 100cm²

After dilation, the area reduces to 25cm²

This shows that there is reduction in the size of the rectangle.

The ratio of the final area to the initial area will give the scale factor.

Ratio = 25cm²:100cm²

= 25/100

= 1/4

The scale factor is therefore 1/4 or 0.25

do i do it on a graph?

step-by-step explanation:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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