Answer:
132 in
Explanation:
You want to know the perimeter of a triangle after the dimensions are quadrupled.
Quadrupled
"Quadrupled" means "multiplied by 4."
The perimeter is the sum of the lengths of the sides of the triangle:
P = 8 +10 +15 = 33 . . . . inches
If the sides are quadrupled, it is ...
P' = 4(8) +4(10) +4(15) = 4(8 +10 +15) = 4(33) = 132 . . . . inches
As you can see, if the sides are quadrupled, the perimeter is quadrupled.
The new perimeter is 132 inches.