1.Find the area of the rectangle below with base = 6 cm and height = 8 cm.
Geometry: Perimeter and Area of Polygons
Calculate perimeter by adding outer boundaries and area using base × height from labeled geometric polygon diagrams.
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About this practice
Grade 3 · math · Matching answer key included · US Letter and A4
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Teaching guide, sample answers and curriculum references
Before you begin
Identify the labeled measurements and the quantity requested.
How to use this worksheet
- Model the target skill: distinguish between linear perimeter measurements and square area units. Use the first task as a guided example before asking for an independent response.
- Check readiness first: Identify the labeled measurements and the quantity requested.
- Discuss an incorrect response using this distinction: Boundary length, area and volume use different units and different calculations.
A common mistake to discuss
Boundary length, area and volume use different units and different calculations.
What to practice next
Label the units in one worked example and explain the choice of method.
Sample question and answer
Find the area of the rectangle below with base = 6 cm and height = 8 cm.
- A. 52 sq cm (cm²)
- B. 48 sq cm (cm²)
- C. 14 sq cm (cm²)
- D. 28 sq cm (cm²)
Answer: B. Area of rectangle = base × height = 6 cm × 8 cm = 48 square cm.
The corresponding diagram is shown in the practice preview and PDF.
Intended curriculum references: CCSS.MATH.CONTENT.3.MD.C.7 · CCSS.MATH.CONTENT.3.MD.D.8. These references describe learning goals; they are not endorsements.
Published 2026-10-02; updated 2026-10-02. Original MakeWorksheet practice. Automated consistency checks support publication; independent subject-specialist review is not recorded. Read our editorial policy.
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