Year 9 Area and Perimeter Worksheet — Level 2 — 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 2 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 22 mm long and 19 mm wide. Find its area.
Answer: 418 mm2
- A = length × width = 22 × 19
- = 418 mm2
2.A triangle has a base of 16 cm and a perpendicular height of 15 cm. Find its area.
Answer: 120 cm2
- A = ½ × base × height = ½ × 16 × 15
- = 120 cm2
3.A rectangle is 30 m long and 20 m wide. Find its perimeter.
Answer: 100 m
- P = 2 × (30 + 20)
- = 2 × 50 = 100 m
4.A rectangle is 2 cm long and 5 cm wide. Find its perimeter.
Answer: 14 cm
- P = 2 × (2 + 5)
- = 2 × 7 = 14 cm
5.A rectangle is 28 cm long and 15 cm wide. Find its area.
Answer: 420 cm2
- A = length × width = 28 × 15
- = 420 cm2
6.A triangle has a base of 9 m and a perpendicular height of 6 m. Find its area.
Answer: 27 m2
- A = ½ × base × height = ½ × 9 × 6
- = 27 m2
7.A rectangle is 16 mm long and 19 mm wide. Find its perimeter.
Answer: 70 mm
- P = 2 × (16 + 19)
- = 2 × 35 = 70 mm
8.A rectangle is 24 cm long and 14 cm wide. Find its area.
Answer: 336 cm2
- A = length × width = 24 × 14
- = 336 cm2
9.A rectangle is 27 m long and 7 m wide. Find its perimeter.
Answer: 68 m
- P = 2 × (27 + 7)
- = 2 × 34 = 68 m
10.A rectangle is 21 cm long and 18 cm wide. Find its area.
Answer: 378 cm2
- A = length × width = 21 × 18
- = 378 cm2
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