Area of Rectangles for 4th Grade
To find the area of a rectangle, multiply its length by its width, and express the answer in square units. Area counts the squares inside a shape, which is why the units are squared. The examples below include composite rectangles, with practice problems and answers.
Free tool: try the problems from this lesson in our Area & Perimeter Calculator.
DETAILED EXPLANATION
The area of a rectangle is length × width. Area is measured in square units (square inches, square centimeters, etc.). It tells how many unit squares cover the rectangle.
WORKED EXAMPLES WITH STEP BY STEP SOLUTIONS
Example 1
A rectangle has length 9 cm and width 5 cm. Find its area.
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Solutions:
Step 1: Apply the concept from the lesson above.
Step 2: Carry out the operation or reasoning.
Answer: Area = 9 × 5 = 45 square centimeters.
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