Question

What is the scale factor in above figure?

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is B $2$


As per the figure, original length is $2$ inch and new length is $4$ inch.

Concept: Original length $\times$ Scale factor = New length

$\Rightarrow 2\text{inch}\times$ Scale factor = $4\text{inch}$

$\Rightarrow \text{Scale factor}=\frac{4\text{inch}}{2\text{inch}}=2$

Therefore, (b) is the correct option.