Year 9 Area and Perimeter Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 9 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · Area & PerimeterYear 9 Area and Perimeter Worksheet — Level 1 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 12 mm long and 8 mm wide. Find its area.
Answer: 96 mm2
- A = length × width = 12 × 8
- = 96 mm2
2.A rectangle is 2 mm long and 8 mm wide. Find its perimeter.
Answer: 20 mm
- P = 2 × (2 + 8)
- = 2 × 10 = 20 mm
3.A rectangle is 10 cm long and 4 cm wide. Find its area.
Answer: 40 cm2
- A = length × width = 10 × 4
- = 40 cm2
4.A rectangle is 2 cm long and 12 cm wide. Find its area.
Answer: 24 cm2
- A = length × width = 2 × 12
- = 24 cm2
5.A rectangle is 10 m long and 7 m wide. Find its perimeter.
Answer: 34 m
- P = 2 × (10 + 7)
- = 2 × 17 = 34 m
6.A rectangle is 12 cm long and 4 cm wide. Find its perimeter.
Answer: 32 cm
- P = 2 × (12 + 4)
- = 2 × 16 = 32 cm
7.A rectangle is 11 m long and 7 m wide. Find its perimeter.
Answer: 36 m
- P = 2 × (11 + 7)
- = 2 × 18 = 36 m
8.A rectangle is 6 mm long and 11 mm wide. Find its area.
Answer: 66 mm2
- A = length × width = 6 × 11
- = 66 mm2
9.A rectangle is 11 mm long and 2 mm wide. Find its perimeter.
Answer: 26 mm
- P = 2 × (11 + 2)
- = 2 × 13 = 26 mm
10.A rectangle is 6 cm long and 6 cm wide. Find its perimeter.
Answer: 24 cm
- P = 2 × (6 + 6)
- = 2 × 12 = 24 cm
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