9th Grade Area and Perimeter Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 9th Grade area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Area & Perimeter9th Grade Area and Perimeter Worksheet — Level 2 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A triangle has a base of 9 cm and a height of 3 cm. Find its area.
Answer: 13.5 cm2
- A = ½ × base × height = ½ × 9 × 3
- = 13.5 cm2
2.A triangle has a base of 16 mm and a height of 14 mm. Find its area.
Answer: 112 mm2
- A = ½ × base × height = ½ × 16 × 14
- = 112 mm2
3.A rectangle is 24 m long and 2 m wide. Find its perimeter.
Answer: 52 m
- P = 2 × (24 + 2)
- = 2 × 26 = 52 m
4.A rectangle is 16 cm long and 13 cm wide. Find its area.
Answer: 208 cm2
- A = length × width = 16 × 13
- = 208 cm2
5.A triangle has a base of 5 m and a height of 8 m. Find its area.
Answer: 20 m2
- A = ½ × base × height = ½ × 5 × 8
- = 20 m2
6.A rectangle is 5 mm long and 19 mm wide. Find its area.
Answer: 95 mm2
- A = length × width = 5 × 19
- = 95 mm2
7.A rectangle is 14 cm long and 4 cm wide. Find its area.
Answer: 56 cm2
- A = length × width = 14 × 4
- = 56 cm2
8.A rectangle is 26 cm long and 6 cm wide. Find its perimeter.
Answer: 64 cm
- P = 2 × (26 + 6)
- = 2 × 32 = 64 cm
9.A triangle has a base of 10 m and a height of 9 m. Find its area.
Answer: 45 m2
- A = ½ × base × height = ½ × 10 × 9
- = 45 m2
10.A rectangle is 13 mm long and 10 mm wide. Find its area.
Answer: 130 mm2
- A = length × width = 13 × 10
- = 130 mm2
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