Year 9 Area and Perimeter Worksheet — Level 2 — 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 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 29 cm long and 8 cm wide. Find its perimeter.
Answer: 74 cm
- P = 2 × (29 + 8)
- = 2 × 37 = 74 cm
2.A rectangle is 17 m long and 9 m wide. Find its area.
Answer: 153 m2
- A = length × width = 17 × 9
- = 153 m2
3.A rectangle is 7 m long and 6 m wide. Find its area.
Answer: 42 m2
- A = length × width = 7 × 6
- = 42 m2
4.A triangle has a base of 19 mm and a perpendicular height of 3 mm. Find its area.
Answer: 28.5 mm2
- A = ½ × base × height = ½ × 19 × 3
- = 28.5 mm2
5.A rectangle is 28 cm long and 4 cm wide. Find its area.
Answer: 112 cm2
- A = length × width = 28 × 4
- = 112 cm2
6.A triangle has a base of 20 cm and a perpendicular height of 5 cm. Find its area.
Answer: 50 cm2
- A = ½ × base × height = ½ × 20 × 5
- = 50 cm2
7.A rectangle is 8 m long and 12 m wide. Find its perimeter.
Answer: 40 m
- P = 2 × (8 + 12)
- = 2 × 20 = 40 m
8.A rectangle is 29 cm long and 15 cm wide. Find its area.
Answer: 435 cm2
- A = length × width = 29 × 15
- = 435 cm2
9.A triangle has a base of 11 mm and a perpendicular height of 9 mm. Find its area.
Answer: 49.5 mm2
- A = ½ × base × height = ½ × 11 × 9
- = 49.5 mm2
10.A rectangle is 13 mm long and 5 mm wide. Find its perimeter.
Answer: 36 mm
- P = 2 × (13 + 5)
- = 2 × 18 = 36 mm
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