Question

A rectangle is dilated by a scale factor of 4.

a) The original rectangle is 8 cm by 3 cm. What are the dimensions of the new rectangle?
b) Is the new image a reduction or enlargement? Explain.

Answer 1

a) The original rectangle is 8 cm by 3 cm. What are the dimensions of the new rectangle?

To find the new dimensions of the rectangle, what you must do is multiply each of the dimensions by the scale factor.
We have then:
(4) * (8) = 32 cm
(4) * (3) = 12 cm
Answer:
The dimensions of the new rectangle are:
32 cm by 12 cm
b) Is the new image a reduction or enlargement? Explain
As k> 1 (4> 1) then the new image is an enlargement of the original figure.
Answer:
the new image is a enlargement