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 26 m long and 2 m wide. Find its area.
Answer: 52 m2
- A = length × width = 26 × 2
- = 52 m2
2.A rectangle is 7 m long and 10 m wide. Find its perimeter.
Answer: 34 m
- P = 2 × (7 + 10)
- = 2 × 17 = 34 m
3.A triangle has a base of 8 cm and a perpendicular height of 4 cm. Find its area.
Answer: 16 cm2
- A = ½ × base × height = ½ × 8 × 4
- = 16 cm2
4.A rectangle is 21 cm long and 6 cm wide. Find its area.
Answer: 126 cm2
- A = length × width = 21 × 6
- = 126 cm2
5.A rectangle is 5 cm long and 7 cm wide. Find its area.
Answer: 35 cm2
- A = length × width = 5 × 7
- = 35 cm2
6.A triangle has a base of 8 cm and a perpendicular height of 10 cm. Find its area.
Answer: 40 cm2
- A = ½ × base × height = ½ × 8 × 10
- = 40 cm2
7.A rectangle is 11 m long and 11 m wide. Find its area.
Answer: 121 m2
- A = length × width = 11 × 11
- = 121 m2
8.A triangle has a base of 11 m and a perpendicular height of 4 m. Find its area.
Answer: 22 m2
- A = ½ × base × height = ½ × 11 × 4
- = 22 m2
9.A rectangle is 10 m long and 5 m wide. Find its perimeter.
Answer: 30 m
- P = 2 × (10 + 5)
- = 2 × 15 = 30 m
10.A triangle has a base of 7 mm and a perpendicular height of 11 mm. Find its area.
Answer: 38.5 mm2
- A = ½ × base × height = ½ × 7 × 11
- = 38.5 mm2
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