Year 7 Area and Perimeter Worksheet — Level 2 — Practice Set 2 — 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 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A triangle has a base of 7 mm and a perpendicular height of 8 mm. Find its area.
Answer: 28 mm2
- A = ½ × base × height = ½ × 7 × 8
- = 28 mm2
2.A triangle has a base of 17 cm and a perpendicular height of 11 cm. Find its area.
Answer: 93.5 cm2
- A = ½ × base × height = ½ × 17 × 11
- = 93.5 cm2
3.A triangle has a base of 8 cm and a perpendicular height of 15 cm. Find its area.
Answer: 60 cm2
- A = ½ × base × height = ½ × 8 × 15
- = 60 cm2
4.A triangle has a base of 9 mm and a perpendicular height of 3 mm. Find its area.
Answer: 13.5 mm2
- A = ½ × base × height = ½ × 9 × 3
- = 13.5 mm2
5.A rectangle is 6 m long and 20 m wide. Find its perimeter.
Answer: 52 m
- P = 2 × (6 + 20)
- = 2 × 26 = 52 m
6.A rectangle is 5 m long and 12 m wide. Find its area.
Answer: 60 m2
- A = length × width = 5 × 12
- = 60 m2
7.A rectangle is 2 mm long and 10 mm wide. Find its perimeter.
Answer: 24 mm
- P = 2 × (2 + 10)
- = 2 × 12 = 24 mm
8.A rectangle is 2 mm long and 10 mm wide. Find its area.
Answer: 20 mm2
- A = length × width = 2 × 10
- = 20 mm2
9.A rectangle is 23 m long and 6 m wide. Find its area.
Answer: 138 m2
- A = length × width = 23 × 6
- = 138 m2
10.A rectangle is 22 cm long and 3 cm wide. Find its perimeter.
Answer: 50 cm
- P = 2 × (22 + 3)
- = 2 × 25 = 50 cm
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