Year 8 Area and Perimeter Worksheet — Level 3 — 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 3 — Practice Set 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 14 cm long and 18 cm wide. Find its area.
Answer: 252 cm2
- A = length × width = 14 × 18
- = 252 cm2
2.An L-shape is made from a 29 mm by 19 mm rectangle joined to a 6 mm by 6 mm rectangle. Find the total area.
Answer: 587 mm2
- Rectangle 1: 29 × 19 = 551
- Rectangle 2: 6 × 6 = 36
- Total: 551 + 36 = 587 mm2
3.An L-shape is made from a 27 cm by 17 cm rectangle joined to a 21 cm by 18 cm rectangle. Find the total area.
Answer: 837 cm2
- Rectangle 1: 27 × 17 = 459
- Rectangle 2: 21 × 18 = 378
- Total: 459 + 378 = 837 cm2
4.A rectangle is 30 mm long and 16 mm wide. Find its area.
Answer: 480 mm2
- A = length × width = 30 × 16
- = 480 mm2
5.A rectangle is 18 m long and 14 m wide. Find its area.
Answer: 252 m2
- A = length × width = 18 × 14
- = 252 m2
6.A rectangle is 14 cm long and 4 cm wide. Find its area.
Answer: 56 cm2
- A = length × width = 14 × 4
- = 56 cm2
7.A rectangle is 13 m long and 9 m wide. Find its area.
Answer: 117 m2
- A = length × width = 13 × 9
- = 117 m2
8.A triangle has a base of 13 m and a perpendicular height of 10 m. Find its area.
Answer: 65 m2
- A = ½ × base × height = ½ × 13 × 10
- = 65 m2
9.A rectangle is 4 cm long and 12 cm wide. Find its area.
Answer: 48 cm2
- A = length × width = 4 × 12
- = 48 cm2
10.A triangle has a base of 7 mm and a perpendicular height of 6 mm. Find its area.
Answer: 21 mm2
- A = ½ × base × height = ½ × 7 × 6
- = 21 mm2
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