The perimeter is the total sum of the lengths of all the sides. Since the sandbox is in the shape of a triangle, it has 3 sides.
Looking at the model, each side is labeled as x.
Therefore, the perimeter of Elliot's sandbox is:
x + x + x = 3x.
The correct answer is D.
Elliot is building a sandbox in the shape of a triangle. A model of the sandbox is shown. Which expression represents the perimeter of Elliot's sandbox
A x+11
B 3x-2
C x+10
D 3x + 10
1 answer