Question

Calculate the new perimeter using a scale factor of 1/5

Answer 1

80

Explanation:

Answer 2

The new perimeter of the triangle, using a scale factor of
`(1)/(5)`, is 16 units.

To calculate the new perimeter of a triangle using a scale factor of 1/5, we need to multiply each side length of the original triangle by the scale factor.

Given triangle:
Side 1: 20 units
Side 2: 15 units
Side 3: 45 units

To calculate the new perimeter, we will multiply each side length by 1/5:

New side 1: 20 units *
`(1)/(5)` = 4 units
New side 2: 15 units *
`(1)/(5)` = 3 units
New side 3: 45 units *
`(1)/(5)` = 9 units

Now, we can calculate the new perimeter by adding up the new side lengths:

New perimeter = New side 1 + New side 2 + New side 3
= 4 units + 3 units + 9 units
= 16 units