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Year 4 Area and Perimeter Worksheet — Level 3 — Practice Set 2 — Answers

Answer sheet with worked solutions for the Year 4 area & perimeter worksheet.

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Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · Area & Perimeter

Year 4 Area and Perimeter Worksheet — Level 3 — Practice Set 2 — Answers

Write the formula, substitute, then calculate. Include units.

1.A triangle has a base of 4 mm and a perpendicular height of 6 mm. Find its area.

Answer: 12 mm2

  1. A = ½ × base × height = ½ × 4 × 6
  2. = 12 mm2
2.An L-shape is made from a 30 m by 12 m rectangle joined to a 11 m by 4 m rectangle. Find the total area.

Answer: 404 m2

  1. Rectangle 1: 30 × 12 = 360
  2. Rectangle 2: 11 × 4 = 44
  3. Total: 360 + 44 = 404 m2
3.A rectangle is 11 mm long and 7 mm wide. Find its area.

Answer: 77 mm2

  1. A = length × width = 11 × 7
  2. = 77 mm2
4.A rectangle is 4 mm long and 12 mm wide. Find its area.

Answer: 48 mm2

  1. A = length × width = 4 × 12
  2. = 48 mm2
5.A triangle has a base of 14 mm and a perpendicular height of 6 mm. Find its area.

Answer: 42 mm2

  1. A = ½ × base × height = ½ × 14 × 6
  2. = 42 mm2
6.A rectangle is 15 m long and 3 m wide. Find its area.

Answer: 45 m2

  1. A = length × width = 15 × 3
  2. = 45 m2
7.A triangle has a base of 20 mm and a perpendicular height of 15 mm. Find its area.

Answer: 150 mm2

  1. A = ½ × base × height = ½ × 20 × 15
  2. = 150 mm2
8.A triangle has a base of 9 cm and a perpendicular height of 13 cm. Find its area.

Answer: 58.5 cm2

  1. A = ½ × base × height = ½ × 9 × 13
  2. = 58.5 cm2
9.A rectangle is 14 m long and 15 m wide. Find its area.

Answer: 210 m2

  1. A = length × width = 14 × 15
  2. = 210 m2
10.A rectangle is 28 cm long and 14 cm wide. Find its area.

Answer: 392 cm2

  1. A = length × width = 28 × 14
  2. = 392 cm2
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