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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 rectangle is 13 m long and 9 m wide. Find its area.

Answer: 117 m2

  1. A = length × width = 13 × 9
  2. = 117 m2
2.A rectangle is 24 m long and 6 m wide. Find its area.

Answer: 144 m2

  1. A = length × width = 24 × 6
  2. = 144 m2
3.An L-shape is made from a 10 mm by 2 mm rectangle joined to a 2 mm by 4 mm rectangle. Find the total area.

Answer: 28 mm2

  1. Rectangle 1: 10 × 2 = 20
  2. Rectangle 2: 2 × 4 = 8
  3. Total: 20 + 8 = 28 mm2
4.A triangle has a base of 13 mm and a perpendicular height of 5 mm. Find its area.

Answer: 32.5 mm2

  1. A = ½ × base × height = ½ × 13 × 5
  2. = 32.5 mm2
5.An L-shape is made from a 27 cm by 12 cm rectangle joined to a 2 cm by 6 cm rectangle. Find the total area.

Answer: 336 cm2

  1. Rectangle 1: 27 × 12 = 324
  2. Rectangle 2: 2 × 6 = 12
  3. Total: 324 + 12 = 336 cm2
6.A triangle has a base of 6 mm and a perpendicular height of 15 mm. Find its area.

Answer: 45 mm2

  1. A = ½ × base × height = ½ × 6 × 15
  2. = 45 mm2
7.A triangle has a base of 15 mm and a perpendicular height of 7 mm. Find its area.

Answer: 52.5 mm2

  1. A = ½ × base × height = ½ × 15 × 7
  2. = 52.5 mm2
8.A triangle has a base of 10 mm and a perpendicular height of 8 mm. Find its area.

Answer: 40 mm2

  1. A = ½ × base × height = ½ × 10 × 8
  2. = 40 mm2
9.A triangle has a base of 18 cm and a perpendicular height of 3 cm. Find its area.

Answer: 27 cm2

  1. A = ½ × base × height = ½ × 18 × 3
  2. = 27 cm2
10.A triangle has a base of 10 mm and a perpendicular height of 14 mm. Find its area.

Answer: 70 mm2

  1. A = ½ × base × height = ½ × 10 × 14
  2. = 70 mm2
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