Question

Question 46: A figure has a perimeter of 112 units. What will the new perimeter be after a dilation with a scale factor of 1/4?

Can someone please help me?

Answer 1

Answer: 65

Explanation:

P = 2L + 2w <---- formula for perimeter

26 = 2L + 2w <--- original perimeter is 26

13 = L + w <--- divides everything by 2

32.5 = 2.5L + 2.5w <-- scale factor of 2.5; those are the NEW length and width

Multiplying both sides by 2, the new perimeter is 65;