Year 9 Area and Perimeter Worksheet — Level 2 — Practice Set 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 — Practice Set 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 29 mm long and 11 mm wide. Find its area.
Answer: 319 mm2
- A = length × width = 29 × 11
- = 319 mm2
2.A triangle has a base of 19 mm and a perpendicular height of 6 mm. Find its area.
Answer: 57 mm2
- A = ½ × base × height = ½ × 19 × 6
- = 57 mm2
3.A triangle has a base of 15 mm and a perpendicular height of 4 mm. Find its area.
Answer: 30 mm2
- A = ½ × base × height = ½ × 15 × 4
- = 30 mm2
4.A rectangle is 9 cm long and 4 cm wide. Find its area.
Answer: 36 cm2
- A = length × width = 9 × 4
- = 36 cm2
5.A triangle has a base of 14 m and a perpendicular height of 15 m. Find its area.
Answer: 105 m2
- A = ½ × base × height = ½ × 14 × 15
- = 105 m2
6.A rectangle is 21 mm long and 10 mm wide. Find its area.
Answer: 210 mm2
- A = length × width = 21 × 10
- = 210 mm2
7.A rectangle is 22 cm long and 14 cm wide. Find its perimeter.
Answer: 72 cm
- P = 2 × (22 + 14)
- = 2 × 36 = 72 cm
8.A rectangle is 2 m long and 6 m wide. Find its perimeter.
Answer: 16 m
- P = 2 × (2 + 6)
- = 2 × 8 = 16 m
9.A triangle has a base of 13 m and a perpendicular height of 9 m. Find its area.
Answer: 58.5 m2
- A = ½ × base × height = ½ × 13 × 9
- = 58.5 m2
10.A rectangle is 4 mm long and 11 mm wide. Find its area.
Answer: 44 mm2
- A = length × width = 4 × 11
- = 44 mm2
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