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

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

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Success TutoringWorksheetsAnswer sheet4th Grade · Mathematics · Area & Perimeter

4th Grade 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 14 cm and a height of 11 cm. Find its area.

Answer: 77 cm2

  1. A = ½ × base × height = ½ × 14 × 11
  2. = 77 cm2
2.An L-shape is made from a 4 mm by 12 mm rectangle joined to a 3 mm by 14 mm rectangle. Find the total area.

Answer: 90 mm2

  1. Rectangle 1: 4 × 12 = 48
  2. Rectangle 2: 3 × 14 = 42
  3. Total: 48 + 42 = 90 mm2
3.A triangle has a base of 10 m and a height of 5 m. Find its area.

Answer: 25 m2

  1. A = ½ × base × height = ½ × 10 × 5
  2. = 25 m2
4.A rectangle is 21 cm long and 8 cm wide. Find its area.

Answer: 168 cm2

  1. A = length × width = 21 × 8
  2. = 168 cm2
5.A rectangle is 22 m long and 10 m wide. Find its area.

Answer: 220 m2

  1. A = length × width = 22 × 10
  2. = 220 m2
6.An L-shape is made from a 28 cm by 17 cm rectangle joined to a 23 cm by 16 cm rectangle. Find the total area.

Answer: 844 cm2

  1. Rectangle 1: 28 × 17 = 476
  2. Rectangle 2: 23 × 16 = 368
  3. Total: 476 + 368 = 844 cm2
7.An L-shape is made from a 15 m by 4 m rectangle joined to a 9 m by 6 m rectangle. Find the total area.

Answer: 114 m2

  1. Rectangle 1: 15 × 4 = 60
  2. Rectangle 2: 9 × 6 = 54
  3. Total: 60 + 54 = 114 m2
8.A triangle has a base of 15 m and a height of 11 m. Find its area.

Answer: 82.5 m2

  1. A = ½ × base × height = ½ × 15 × 11
  2. = 82.5 m2
9.A triangle has a base of 17 cm and a height of 15 cm. Find its area.

Answer: 127.5 cm2

  1. A = ½ × base × height = ½ × 17 × 15
  2. = 127.5 cm2
10.A triangle has a base of 7 m and a height of 15 m. Find its area.

Answer: 52.5 m2

  1. A = ½ × base × height = ½ × 7 × 15
  2. = 52.5 m2
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