Question

Cual expresion algebraica representa el perimetro en unidades de un rectangulo cuyo largo es 3 unidades mas que su ancho, x?

Answer 1

Question in English: Which algebraic expression represents the perimeter of a rectangle whose length is 3 units more than its width x units?

Formula:

• If a and b be the length and width of a rectangle respectively, then:
• its perimeter = 2 (a + b) units
• and area = ab sq. units

Solution:

• Let the width be x units.
• Then length = (x + 3) units.
• So the perimeter of the rectangle is
• = 2 {(x + 3) + x} units
• = 2 (x + 3 + x) units
• = 2 (2x + 3) units
• = 4x + 6 units.

Answer: Therefore the required expression for the perimeter of the given rectangle is 4x + 6 units.