6th Grade Area and Perimeter Worksheet — Level 3 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 6th Grade area & perimeter worksheet.
6th Grade Area and Perimeter Worksheet — Level 3 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 3 cm long and 2 cm wide. Find its area.
Answer: 6 cm2
- A = length × width = 3 × 2
- = 6 cm2
2.A triangle has a base of 4 mm and a height of 5 mm. Find its area.
Answer: 10 mm2
- A = ½ × base × height = ½ × 4 × 5
- = 10 mm2
3.A triangle has a base of 7 m and a height of 7 m. Find its area.
Answer: 24.5 m2
- A = ½ × base × height = ½ × 7 × 7
- = 24.5 m2
4.A rectangle is 29 cm long and 18 cm wide. Find its area.
Answer: 522 cm2
- A = length × width = 29 × 18
- = 522 cm2
5.A triangle has a base of 6 cm and a height of 14 cm. Find its area.
Answer: 42 cm2
- A = ½ × base × height = ½ × 6 × 14
- = 42 cm2
6.A triangle has a base of 15 mm and a height of 12 mm. Find its area.
Answer: 90 mm2
- A = ½ × base × height = ½ × 15 × 12
- = 90 mm2
7.An L-shape is made from a 20 mm by 16 mm rectangle joined to a 3 mm by 6 mm rectangle. Find the total area.
Answer: 338 mm2
- Rectangle 1: 20 × 16 = 320
- Rectangle 2: 3 × 6 = 18
- Total: 320 + 18 = 338 mm2
8.A triangle has a base of 4 cm and a height of 14 cm. Find its area.
Answer: 28 cm2
- A = ½ × base × height = ½ × 4 × 14
- = 28 cm2
9.A triangle has a base of 14 cm and a height of 5 cm. Find its area.
Answer: 35 cm2
- A = ½ × base × height = ½ × 14 × 5
- = 35 cm2
10.A rectangle is 2 cm long and 4 cm wide. Find its area.
Answer: 8 cm2
- A = length × width = 2 × 4
- = 8 cm2
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
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