Question

the scale factor of a figure and its enlargement is 4. what is the new length of the enlarged figure if the original length is 4.5 cm?
○ 4.0 cm
○ 8.5 cm
○ 16 cm
○ 18 cm

Explanation:

Step1: Recall the scale factor formula

To find the length of the enlarged figure, we use the formula: \(\text{New Length} = \text{Original Length} \times \text{Scale Factor}\)

Step2: Substitute the given values

The original length is \(4.5\) cm and the scale factor is \(4\). So we calculate: \(4.5\times4 = 18\) cm

Answer:

18 cm