Year 8 Area and Perimeter Worksheet — Level 3 — 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 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 2 cm long and 18 cm wide. Find its area.
Answer: 36 cm2
- A = length × width = 2 × 18
- = 36 cm2
2.An L-shape is made from a 25 m by 8 m rectangle joined to a 24 m by 5 m rectangle. Find the total area.
Answer: 320 m2
- Rectangle 1: 25 × 8 = 200
- Rectangle 2: 24 × 5 = 120
- Total: 200 + 120 = 320 m2
3.A rectangle is 9 mm long and 9 mm wide. Find its area.
Answer: 81 mm2
- A = length × width = 9 × 9
- = 81 mm2
4.A rectangle is 20 m long and 17 m wide. Find its area.
Answer: 340 m2
- A = length × width = 20 × 17
- = 340 m2
5.A triangle has a base of 15 cm and a perpendicular height of 4 cm. Find its area.
Answer: 30 cm2
- A = ½ × base × height = ½ × 15 × 4
- = 30 cm2
6.A rectangle is 2 cm long and 2 cm wide. Find its area.
Answer: 4 cm2
- A = length × width = 2 × 2
- = 4 cm2
7.A triangle has a base of 13 cm and a perpendicular height of 15 cm. Find its area.
Answer: 97.5 cm2
- A = ½ × base × height = ½ × 13 × 15
- = 97.5 cm2
8.A rectangle is 27 cm long and 7 cm wide. Find its area.
Answer: 189 cm2
- A = length × width = 27 × 7
- = 189 cm2
9.A rectangle is 23 cm long and 14 cm wide. Find its area.
Answer: 322 cm2
- A = length × width = 23 × 14
- = 322 cm2
10.An L-shape is made from a 26 mm by 3 mm rectangle joined to a 22 mm by 5 mm rectangle. Find the total area.
Answer: 188 mm2
- Rectangle 1: 26 × 3 = 78
- Rectangle 2: 22 × 5 = 110
- Total: 78 + 110 = 188 mm2
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