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 10 cm long and 12 cm wide. Find its area.
Answer: 120 cm2
- A = length × width = 10 × 12
- = 120 cm2
2.A rectangle is 3 cm long and 3 cm wide. Find its area.
Answer: 9 cm2
- A = length × width = 3 × 3
- = 9 cm2
3.A rectangle is 2 m long and 5 m wide. Find its area.
Answer: 10 m2
- A = length × width = 2 × 5
- = 10 m2
4.A rectangle is 8 cm long and 8 cm wide. Find its perimeter.
Answer: 32 cm
- P = 2 × (8 + 8)
- = 2 × 16 = 32 cm
5.A rectangle is 4 cm long and 10 cm wide. Find its area.
Answer: 40 cm2
- A = length × width = 4 × 10
- = 40 cm2
6.A rectangle is 9 mm long and 10 mm wide. Find its area.
Answer: 90 mm2
- A = length × width = 9 × 10
- = 90 mm2
7.A rectangle is 4 cm long and 8 cm wide. Find its area.
Answer: 32 cm2
- A = length × width = 4 × 8
- = 32 cm2
8.A rectangle is 9 cm long and 11 cm wide. Find its area.
Answer: 99 cm2
- A = length × width = 9 × 11
- = 99 cm2
9.A rectangle is 5 m long and 9 m wide. Find its perimeter.
Answer: 28 m
- P = 2 × (5 + 9)
- = 2 × 14 = 28 m
10.A rectangle is 6 mm long and 6 mm wide. Find its area.
Answer: 36 mm2
- A = length × width = 6 × 6
- = 36 mm2
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