Question

If the length and width of a rectangle are 9 cm and 5 cm, what are the new dimensions if it is enlarged using a scale factor of 2.5?

A) Length: 22.5 cm, Width: 12.5 cm
B) Length: 11.25 cm, Width: 6.25 cm
C) Length: 9.5 cm, Width: 5.5 cm
D) Length: 18 cm, Width: 10 cm

Answer 1

The new dimensions of the rectangle when enlarged using a scale factor of 2.5 are Length: 22.5 cm and Width: 12.5 cm.

Step-by-step explanation:

To find the new dimensions of the rectangle when it is enlarged using a scale factor of 2.5, we multiply the original dimensions by the scale factor.

The original length is 9 cm, so the new length is 9 cm x 2.5 = 22.5 cm.

The original width is 5 cm, so the new width is 5 cm x 2.5 = 12.5 cm.

Therefore, the new dimensions of the rectangle are Length: 22.5 cm and Width: 12.5 cm, which corresponds to option A).