Question

preimage
image
scale factor = 1/4
image of two purple rectangles: larger (preimage) and smaller (image) with image having height 10 and width 8
what is the area of the preimage?
○ 1,280 u²
○ 80 u²
○ 320 u²
○ 20 u²
e you continue, we recommend completing the day 2 activity,
m design

Explanation:

Step1: Find preimage dimensions

Scale factor is \( \frac{1}{4} \). For image length \( 10 \), preimage length \( = 10\div\frac{1}{4}=40 \). For image width \( 8 \), preimage width \( = 8\div\frac{1}{4}=32 \).

Step2: Calculate preimage area

Area of rectangle \( = \text{length} \times \text{width} \). So, area \( = 40\times32 = 1280 \, u^2 \).

Answer:

1280 \( u^2 \)