Year 4 Area and Perimeter Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 4 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · Area & PerimeterYear 4 Area and Perimeter Worksheet — Level 3 — Practice Set 4 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 13 cm long and 20 cm wide. Find its area.
Answer: 260 cm2
- A = length × width = 13 × 20
- = 260 cm2
2.A rectangle is 9 mm long and 4 mm wide. Find its area.
Answer: 36 mm2
- A = length × width = 9 × 4
- = 36 mm2
3.A rectangle is 30 mm long and 15 mm wide. Find its area.
Answer: 450 mm2
- A = length × width = 30 × 15
- = 450 mm2
4.A triangle has a base of 10 mm and a perpendicular height of 14 mm. Find its area.
Answer: 70 mm2
- A = ½ × base × height = ½ × 10 × 14
- = 70 mm2
5.An L-shape is made from a 12 mm by 13 mm rectangle joined to a 10 mm by 13 mm rectangle. Find the total area.
Answer: 286 mm2
- Rectangle 1: 12 × 13 = 156
- Rectangle 2: 10 × 13 = 130
- Total: 156 + 130 = 286 mm2
6.A triangle has a base of 5 mm and a perpendicular height of 9 mm. Find its area.
Answer: 22.5 mm2
- A = ½ × base × height = ½ × 5 × 9
- = 22.5 mm2
7.An L-shape is made from a 28 m by 10 m rectangle joined to a 7 m by 6 m rectangle. Find the total area.
Answer: 322 m2
- Rectangle 1: 28 × 10 = 280
- Rectangle 2: 7 × 6 = 42
- Total: 280 + 42 = 322 m2
8.A rectangle is 23 cm long and 4 cm wide. Find its area.
Answer: 92 cm2
- A = length × width = 23 × 4
- = 92 cm2
9.A triangle has a base of 4 m and a perpendicular height of 4 m. Find its area.
Answer: 8 m2
- A = ½ × base × height = ½ × 4 × 4
- = 8 m2
10.A rectangle is 23 m long and 17 m wide. Find its area.
Answer: 391 m2
- A = length × width = 23 × 17
- = 391 m2
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