Year 10 Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 10 area & perimeter worksheet.
Year 10 Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 4 m long and 11 m wide. Find its perimeter.
Answer: 30 m
- P = 2 × (4 + 11)
- = 2 × 15 = 30 m
2.A rectangle is 3 m long and 8 m wide. Find its perimeter.
Answer: 22 m
- P = 2 × (3 + 8)
- = 2 × 11 = 22 m
3.A rectangle is 3 cm long and 8 cm wide. Find its perimeter.
Answer: 22 cm
- P = 2 × (3 + 8)
- = 2 × 11 = 22 cm
4.A rectangle is 12 cm long and 8 cm wide. Find its area.
Answer: 96 cm2
- A = length × width = 12 × 8
- = 96 cm2
5.A rectangle is 5 mm long and 6 mm wide. Find its perimeter.
Answer: 22 mm
- P = 2 × (5 + 6)
- = 2 × 11 = 22 mm
6.A rectangle is 6 cm long and 12 cm wide. Find its area.
Answer: 72 cm2
- A = length × width = 6 × 12
- = 72 cm2
7.A rectangle is 12 m long and 11 m wide. Find its area.
Answer: 132 m2
- A = length × width = 12 × 11
- = 132 m2
8.A rectangle is 8 m long and 4 m wide. Find its perimeter.
Answer: 24 m
- P = 2 × (8 + 4)
- = 2 × 12 = 24 m
9.A rectangle is 11 m long and 2 m wide. Find its perimeter.
Answer: 26 m
- P = 2 × (11 + 2)
- = 2 × 13 = 26 m
10.A rectangle is 3 mm long and 3 mm wide. Find its perimeter.
Answer: 12 mm
- P = 2 × (3 + 3)
- = 2 × 6 = 12 mm
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.