Success TutoringWorksheets

Year 7 Area and Perimeter Worksheet — Level 3 — Answers

Answer sheet with worked solutions for the Year 7 area & perimeter worksheet.

Download answers PDFPrint answersBack to worksheet
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · Area & Perimeter

Year 7 Area and Perimeter Worksheet — Level 3 — Answers

Write the formula, substitute, then calculate. Include units.

1.A triangle has a base of 13 mm and a perpendicular height of 3 mm. Find its area.

Answer: 19.5 mm2

  1. A = ½ × base × height = ½ × 13 × 3
  2. = 19.5 mm2
2.A triangle has a base of 14 cm and a perpendicular height of 12 cm. Find its area.

Answer: 84 cm2

  1. A = ½ × base × height = ½ × 14 × 12
  2. = 84 cm2
3.A rectangle is 23 cm long and 8 cm wide. Find its area.

Answer: 184 cm2

  1. A = length × width = 23 × 8
  2. = 184 cm2
4.An L-shape is made from a 8 cm by 11 cm rectangle joined to a 6 cm by 2 cm rectangle. Find the total area.

Answer: 100 cm2

  1. Rectangle 1: 8 × 11 = 88
  2. Rectangle 2: 6 × 2 = 12
  3. Total: 88 + 12 = 100 cm2
5.A rectangle is 25 mm long and 20 mm wide. Find its area.

Answer: 500 mm2

  1. A = length × width = 25 × 20
  2. = 500 mm2
6.A triangle has a base of 16 cm and a perpendicular height of 15 cm. Find its area.

Answer: 120 cm2

  1. A = ½ × base × height = ½ × 16 × 15
  2. = 120 cm2
7.An L-shape is made from a 22 cm by 17 cm rectangle joined to a 11 cm by 7 cm rectangle. Find the total area.

Answer: 451 cm2

  1. Rectangle 1: 22 × 17 = 374
  2. Rectangle 2: 11 × 7 = 77
  3. Total: 374 + 77 = 451 cm2
8.A rectangle is 11 m long and 15 m wide. Find its area.

Answer: 165 m2

  1. A = length × width = 11 × 15
  2. = 165 m2
9.An L-shape is made from a 4 m by 2 m rectangle joined to a 3 m by 6 m rectangle. Find the total area.

Answer: 26 m2

  1. Rectangle 1: 4 × 2 = 8
  2. Rectangle 2: 3 × 6 = 18
  3. Total: 8 + 18 = 26 m2
10.A triangle has a base of 17 cm and a perpendicular height of 8 cm. Find its area.

Answer: 68 cm2

  1. A = ½ × base × height = ½ × 17 × 8
  2. = 68 cm2
Free worksheets at worksheets.successtutoring.com · © Success Tutoring · Free for personal and classroom use

Marking tips

  • Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
  • For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
  • Celebrate what went well first, then pick one thing to work on next.

Great work. Here's what to try next: