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Year 5 Area and Perimeter Worksheet — Level 3 — Practice Set 4 — Answers

Answer sheet with worked solutions for the Year 5 area & perimeter worksheet.

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Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · Area & Perimeter

Year 5 Area and Perimeter Worksheet — Level 3 — Practice Set 4 — Answers

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

1.A triangle has a base of 19 cm and a perpendicular height of 15 cm. Find its area.

Answer: 142.5 cm2

  1. A = ½ × base × height = ½ × 19 × 15
  2. = 142.5 cm2
2.A rectangle is 28 mm long and 9 mm wide. Find its area.

Answer: 252 mm2

  1. A = length × width = 28 × 9
  2. = 252 mm2
3.A rectangle is 30 cm long and 2 cm wide. Find its area.

Answer: 60 cm2

  1. A = length × width = 30 × 2
  2. = 60 cm2
4.A rectangle is 20 m long and 5 m wide. Find its area.

Answer: 100 m2

  1. A = length × width = 20 × 5
  2. = 100 m2
5.A triangle has a base of 18 cm and a perpendicular height of 14 cm. Find its area.

Answer: 126 cm2

  1. A = ½ × base × height = ½ × 18 × 14
  2. = 126 cm2
6.A triangle has a base of 20 mm and a perpendicular height of 12 mm. Find its area.

Answer: 120 mm2

  1. A = ½ × base × height = ½ × 20 × 12
  2. = 120 mm2
7.A rectangle is 25 cm long and 16 cm wide. Find its area.

Answer: 400 cm2

  1. A = length × width = 25 × 16
  2. = 400 cm2
8.A triangle has a base of 8 mm and a perpendicular height of 9 mm. Find its area.

Answer: 36 mm2

  1. A = ½ × base × height = ½ × 8 × 9
  2. = 36 mm2
9.A triangle has a base of 4 mm and a perpendicular height of 15 mm. Find its area.

Answer: 30 mm2

  1. A = ½ × base × height = ½ × 4 × 15
  2. = 30 mm2
10.An L-shape is made from a 15 cm by 16 cm rectangle joined to a 10 cm by 6 cm rectangle. Find the total area.

Answer: 300 cm2

  1. Rectangle 1: 15 × 16 = 240
  2. Rectangle 2: 10 × 6 = 60
  3. Total: 240 + 60 = 300 cm2
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