Exercises: Applying Area and Perimeter Formulas for Rectangles
Work through each section in order. Before computing, decide whether a problem asks
for area or perimeter, and label every answer with the correct kind of unit.
Recall / Warm-Up
These problems review skills from earlier grades that this lesson depends on.
A rectangle is covered by unit squares arranged in 5 rows of 4 squares each. How many square units cover the rectangle?
What number makes this true: ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ x 6 = 42?
A shape has four sides with lengths 8, 3, 8, and 3. What is the total distance around the shape?
Fluency Practice
A rectangular poster is 9 inches long and 6 inches wide. What is its area, in square inches?
A rectangular rug is 12 feet long and 8 feet wide. What is its area, in square feet?
A rectangular room has a floor area of 63 square feet. The length is 9 feet. What is the width, in feet?
A rectangular banner has an area of 168 square inches. The width is 8 inches. What is the length, in inches?
A table is 4 feet wide. Its area is 28 square feet. What is the length of the table, in feet?
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