Question

a rectangle with a base of 6 and height of 4 has been scaled with a scale factor of 3. what is the area of the scaled copy?

Answer 1

We have a rectangle of base 6 and height 4. We have a rectangle like this:

Now, we have a scale factor of 3. We need to multiply each side by 3:

Now the rectangle has a height of 12 and a base of 18.

The area of a rectangle is h*b. Then, the area of the scaled copy is:

$A=12\cdot18\Rightarrow A=216$

Therefore, the scaled copy has an area of 216 square units.