Area and Perimeter (P5) Practice
Find areas and perimeters of composite figures made from rectangles, triangles, and parallelograms. Master the area of a triangle (½ × base × height) and handle problems with missing dimensions.
Common Mistakes to Avoid
Using the slant side instead of the perpendicular height for triangle area
Confusing perimeter (the boundary) with area (the enclosed space)
Forgetting to subtract 'cut-away' portions in composite figures
Practice Questions
Try each question. When you're stuck, reveal the Socratic strategy — a guided hint that teaches you how to think, not just what to write.
A triangle has a base of 14 cm and a perpendicular height of 9 cm. Find its area.
A composite shape is made from a rectangle (10 cm × 6 cm) with a right triangle (base 4 cm, height 6 cm) cut away from one corner. Find the area of the remaining shape.
A parallelogram has a base of 12 cm and a perpendicular height of 7 cm. Find its area.
Parent & Tutor Insight
Composite figure problems are where marks are most often lost. Encourage your child to always label the full shape first, then identify what needs to be added or subtracted. A tidy diagram prevents most errors.
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