Year 7 Area and Perimeter Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 7 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · Area & PerimeterYear 7 Area and Perimeter Worksheet — Level 2 — Practice Set 4 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 14 m long and 9 m wide. Find its perimeter.
Answer: 46 m
- P = 2 × (14 + 9)
- = 2 × 23 = 46 m
2.A triangle has a base of 12 m and a perpendicular height of 6 m. Find its area.
Answer: 36 m2
- A = ½ × base × height = ½ × 12 × 6
- = 36 m2
3.A rectangle is 27 mm long and 11 mm wide. Find its area.
Answer: 297 mm2
- A = length × width = 27 × 11
- = 297 mm2
4.A triangle has a base of 20 mm and a perpendicular height of 4 mm. Find its area.
Answer: 40 mm2
- A = ½ × base × height = ½ × 20 × 4
- = 40 mm2
5.A triangle has a base of 8 m and a perpendicular height of 3 m. Find its area.
Answer: 12 m2
- A = ½ × base × height = ½ × 8 × 3
- = 12 m2
6.A triangle has a base of 17 mm and a perpendicular height of 5 mm. Find its area.
Answer: 42.5 mm2
- A = ½ × base × height = ½ × 17 × 5
- = 42.5 mm2
7.A triangle has a base of 10 mm and a perpendicular height of 4 mm. Find its area.
Answer: 20 mm2
- A = ½ × base × height = ½ × 10 × 4
- = 20 mm2
8.A triangle has a base of 6 m and a perpendicular height of 4 m. Find its area.
Answer: 12 m2
- A = ½ × base × height = ½ × 6 × 4
- = 12 m2
9.A rectangle is 5 mm long and 8 mm wide. Find its area.
Answer: 40 mm2
- A = length × width = 5 × 8
- = 40 mm2
10.A triangle has a base of 16 m and a perpendicular height of 11 m. Find its area.
Answer: 88 m2
- A = ½ × base × height = ½ × 16 × 11
- = 88 m2
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