Question

If the rectangle below were to be enlarged by a scale factor of 5, what would the new size be? 2 10 X 15 10 X 6 8 X 15 2 X3

Answer 1

If the rectangle was enlarged by a scale factor of 5, it means both of its dimensions will be multiplied by 5.

So, calculating its new dimensions, we have:

$\begin{gathered} \text{old length: }3 \\ \text{new length: }3\cdot5=15 \\ \\ \text{old width: }2 \\ \text{new width: }2\cdot5=10 \end{gathered}$

So its new dimensions are 10 x 15, therefore the correct option is the first one.