Question

Find the perimeter of XWY. Explain your train of thinking using numbers, words, and symbols.

a) Perimeter = 2X + 2Y + 2W
b) Perimeter = X + Y + W
c) Perimeter = XW + XY + YW
d) Perimeter = 3XW

Answer 1

The perimeter of XWY is calculated using the equation Perimeter = 2X + 2Y + 2W.

Step-by-step explanation:

The correct equation to find the perimeter of XWY is a) Perimeter = 2X + 2Y + 2W.

This equation represents the sum of the lengths of all sides of the triangle.

The perimeter is the distance around the triangle, so we need to add up the lengths of the three sides: X, Y, and W.

Since each side is being counted twice in the equation, we multiply each side length by 2 in order to get the correct total perimeter.