Year 8 Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 8 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Area & PerimeterYear 8 Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 6 cm long and 11 cm wide. Find its perimeter.
Answer: 34 cm
- P = 2 × (6 + 11)
- = 2 × 17 = 34 cm
2.A rectangle is 5 m long and 8 m wide. Find its perimeter.
Answer: 26 m
- P = 2 × (5 + 8)
- = 2 × 13 = 26 m
3.A rectangle is 12 m long and 12 m wide. Find its area.
Answer: 144 m2
- A = length × width = 12 × 12
- = 144 m2
4.A rectangle is 6 m long and 6 m wide. Find its perimeter.
Answer: 24 m
- P = 2 × (6 + 6)
- = 2 × 12 = 24 m
5.A rectangle is 9 mm long and 8 mm wide. Find its area.
Answer: 72 mm2
- A = length × width = 9 × 8
- = 72 mm2
6.A rectangle is 2 mm long and 12 mm wide. Find its perimeter.
Answer: 28 mm
- P = 2 × (2 + 12)
- = 2 × 14 = 28 mm
7.A rectangle is 2 cm long and 9 cm wide. Find its perimeter.
Answer: 22 cm
- P = 2 × (2 + 9)
- = 2 × 11 = 22 cm
8.A rectangle is 9 mm long and 4 mm wide. Find its area.
Answer: 36 mm2
- A = length × width = 9 × 4
- = 36 mm2
9.A rectangle is 6 cm long and 9 cm wide. Find its perimeter.
Answer: 30 cm
- P = 2 × (6 + 9)
- = 2 × 15 = 30 cm
10.A rectangle is 10 mm long and 6 mm wide. Find its area.
Answer: 60 mm2
- A = length × width = 10 × 6
- = 60 mm2
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.