Year 8 Area and Perimeter Worksheet — Level 2 — Practice Set 2 — 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 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A triangle has a base of 15 cm and a perpendicular height of 13 cm. Find its area.
Answer: 97.5 cm2
- A = ½ × base × height = ½ × 15 × 13
- = 97.5 cm2
2.A triangle has a base of 4 mm and a perpendicular height of 14 mm. Find its area.
Answer: 28 mm2
- A = ½ × base × height = ½ × 4 × 14
- = 28 mm2
3.A rectangle is 4 cm long and 17 cm wide. Find its perimeter.
Answer: 42 cm
- P = 2 × (4 + 17)
- = 2 × 21 = 42 cm
4.A rectangle is 7 mm long and 11 mm wide. Find its perimeter.
Answer: 36 mm
- P = 2 × (7 + 11)
- = 2 × 18 = 36 mm
5.A rectangle is 21 m long and 4 m wide. Find its area.
Answer: 84 m2
- A = length × width = 21 × 4
- = 84 m2
6.A rectangle is 25 m long and 17 m wide. Find its area.
Answer: 425 m2
- A = length × width = 25 × 17
- = 425 m2
7.A rectangle is 30 m long and 6 m wide. Find its perimeter.
Answer: 72 m
- P = 2 × (30 + 6)
- = 2 × 36 = 72 m
8.A rectangle is 12 cm long and 7 cm wide. Find its area.
Answer: 84 cm2
- A = length × width = 12 × 7
- = 84 cm2
9.A rectangle is 22 cm long and 6 cm wide. Find its area.
Answer: 132 cm2
- A = length × width = 22 × 6
- = 132 cm2
10.A rectangle is 4 cm long and 14 cm wide. Find its perimeter.
Answer: 36 cm
- P = 2 × (4 + 14)
- = 2 × 18 = 36 cm
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