Math Problem Statement

A large rectangle is made by joining three identical small rectangles as shown. The perimeter of one small rectangle is 21 cm. The width of one small rectangle is x cm. Work out the perimeter of the large rectangle.

Solution

Let's work through this step by step.

Given Information:

  1. Each small rectangle has a perimeter of 21 cm.
  2. The width of each small rectangle is ( x \

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Math Problem Analysis

Mathematical Concepts

Geometry
Perimeter
Rectangles

Formulas

Perimeter of rectangle = 2(length + width)
Relationship between perimeter and dimensions

Theorems

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Suitable Grade Level

Grades 6-8

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