Calculate Trapezoid Perimeter: Solving with 3X+1, 3X-1, 2X+3, and 2X

Question

Express the perimeter of the following trapezoid:

3X+13X+13X+13X-13X-13X-12X+32X+32X+32X2X2XAAABBBDDDCCC

Video Solution

Solution Steps

00:00 Express the perimeter of the trapezoid using X
00:03 The perimeter of the trapezoid equals the sum of its sides
00:15 Substitute appropriate values according to the given data and solve for the perimeter
00:41 Gather all possible factors
00:53 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we will calculate the perimeter of the trapezoid using the expressions given for each side:

  • Top side length: 3X+13X + 1
  • Bottom side length: 2X+32X + 3
  • Right side length: 3X13X - 1
  • Left side length: 2X2X

The formula to find the perimeter PP of a trapezoid is to sum the lengths of all four sides:

P=(3X+1)+(2X+3)+(3X1)+(2X) P = (3X + 1) + (2X + 3) + (3X - 1) + (2X)

First, we will combine like terms:

  • Add up all the XX terms: 3X+2X+3X+2X=10X3X + 2X + 3X + 2X = 10X
  • Add up the constant terms: 1+31+0=31 + 3 - 1 + 0 = 3

Therefore, the perimeter of the trapezoid is:

P=10X+3 P = 10X + 3

The correct choice is the option containing the expression 10X+310X + 3.

Thus, the solution to the problem is 10X+3 10X + 3 .

Answer

10x+3 10x+3