Year 8 Area and Perimeter Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 8 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Area & PerimeterYear 8 Area and Perimeter Worksheet — Level 2 — Practice Set 4 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 18 m long and 13 m wide. Find its perimeter.
Answer: 62 m
- P = 2 × (18 + 13)
- = 2 × 31 = 62 m
2.A triangle has a base of 12 cm and a perpendicular height of 10 cm. Find its area.
Answer: 60 cm2
- A = ½ × base × height = ½ × 12 × 10
- = 60 cm2
3.A triangle has a base of 20 cm and a perpendicular height of 9 cm. Find its area.
Answer: 90 cm2
- A = ½ × base × height = ½ × 20 × 9
- = 90 cm2
4.A rectangle is 9 cm long and 17 cm wide. Find its perimeter.
Answer: 52 cm
- P = 2 × (9 + 17)
- = 2 × 26 = 52 cm
5.A triangle has a base of 11 mm and a perpendicular height of 12 mm. Find its area.
Answer: 66 mm2
- A = ½ × base × height = ½ × 11 × 12
- = 66 mm2
6.A rectangle is 23 m long and 20 m wide. Find its area.
Answer: 460 m2
- A = length × width = 23 × 20
- = 460 m2
7.A rectangle is 29 cm long and 5 cm wide. Find its perimeter.
Answer: 68 cm
- P = 2 × (29 + 5)
- = 2 × 34 = 68 cm
8.A triangle has a base of 6 cm and a perpendicular height of 3 cm. Find its area.
Answer: 9 cm2
- A = ½ × base × height = ½ × 6 × 3
- = 9 cm2
9.A rectangle is 22 mm long and 12 mm wide. Find its area.
Answer: 264 mm2
- A = length × width = 22 × 12
- = 264 mm2
10.A rectangle is 12 cm long and 13 cm wide. Find its area.
Answer: 156 cm2
- A = length × width = 12 × 13
- = 156 cm2
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