Math Problem Statement

If the area of a rectangle is 24cm squared, what is the perimeter

Solution

To find the perimeter of a rectangle, we need both the length (ll) and the width (ww) of the rectangle. Since we are given only the area, which is Area=l×w=24cm2\text{Area} = l \times w = 24 \, \text{cm}^2, we do not have enough information to uniquely determine the dimensions of the rectangle and hence the perimeter.

However, we can express the perimeter (PP) in terms of ll and ww: P=2(l+w).P = 2(l + w).

Since l×w=24l \times w = 24, you can choose various pairs of factors of 24 (e.g., l=6,w=4l = 6, w = 4 or l=8,w=3l = 8, w = 3), calculate the corresponding perimeter, and observe that the perimeter will vary depending on the chosen dimensions.

Example 1: l=6l = 6, w=4w = 4

P=2(6+4)=20cm.P = 2(6 + 4) = 20 \, \text{cm}.

Example 2: l=8l = 8, w=3w = 3

P=2(8+3)=22cm.P = 2(8 + 3) = 22 \, \text{cm}.

Without additional constraints, the perimeter cannot be uniquely determined. If you provide further information (e.g., one side length, or that it’s a square), we can refine the answer.

Would you like more examples or additional explanations?


Related Questions:

  1. How does the area relate to the dimensions of a rectangle?
  2. If one side length of the rectangle is known, how do you find the other side?
  3. How do you calculate the diagonal of a rectangle given its area and perimeter?
  4. What are the implications of assuming the rectangle is a square?
  5. How does changing the length-to-width ratio affect the perimeter for a fixed area?

Tip: For rectangles with fixed area, the square configuration always minimizes the perimeter.

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Math Problem Analysis

Mathematical Concepts

Geometry
Rectangles
Area and Perimeter relationships

Formulas

Area of a rectangle: Area = length × width
Perimeter of a rectangle: Perimeter = 2 × (length + width)

Theorems

Basic properties of rectangles

Suitable Grade Level

Grades 6-8