Area & Perimeter
19 free practice questions with explanations
PassNova has 19 free 11+ Maths practice questions on Area & Perimeter, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Area & Perimeter: example questions & answers
19 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.
What is the area of a rectangle 7 cm long and 4 cm wide?
- A22 cm²
- B11 cm²
- C14 cm²
- D28 cm²✓
Answer: Area of a rectangle is length × width: 7 × 4 = 28 cm². Adding the sides instead gives the perimeter, 22 cm.
What is the area of a rectangle 9 cm long and 6 cm wide?
- A30 cm²
- B15 cm²
- C54 cm²✓
- D27 cm²
Answer: Area of a rectangle is length × width: 9 × 6 = 54 cm². Adding the sides instead gives the perimeter, 30 cm.
What is the area of a rectangle 12 cm long and 5 cm wide?
- A60 cm²✓
- B34 cm²
- C17 cm²
- D30 cm²
Answer: Area of a rectangle is length × width: 12 × 5 = 60 cm². Adding the sides instead gives the perimeter, 34 cm.
What is the area of a rectangle 8 cm long and 8 cm wide?
- A32 cm²
- B64 cm²✓
- C16 cm²
- D34 cm²
Answer: Area of a rectangle is length × width: 8 × 8 = 64 cm². Adding the sides instead gives the perimeter, 32 cm.
What is the area of a rectangle 11 cm long and 3 cm wide?
- A28 cm²
- B33 cm²✓
- C14 cm²
- D16 cm²
Answer: Area of a rectangle is length × width: 11 × 3 = 33 cm². Adding the sides instead gives the perimeter, 28 cm.
What is the area of a rectangle 15 cm long and 6 cm wide?
- A42 cm²
- B90 cm²✓
- C21 cm²
- D45 cm²
Answer: Area of a rectangle is length × width: 15 × 6 = 90 cm². Adding the sides instead gives the perimeter, 42 cm.
What is the perimeter of a rectangle 7 cm long and 4 cm wide?
- A28 cm
- B11 cm
- C22 cm✓
- D18 cm
Answer: Perimeter is the distance all the way round: 7 + 4 + 7 + 4 = 22 cm. Multiplying instead gives the area, 28 cm².
What is the perimeter of a rectangle 9 cm long and 6 cm wide?
- A30 cm✓
- B54 cm
- C15 cm
- D24 cm
Answer: Perimeter is the distance all the way round: 9 + 6 + 9 + 6 = 30 cm. Multiplying instead gives the area, 54 cm².
What is the perimeter of a rectangle 12 cm long and 5 cm wide?
- A34 cm✓
- B60 cm
- C17 cm
- D29 cm
Answer: Perimeter is the distance all the way round: 12 + 5 + 12 + 5 = 34 cm. Multiplying instead gives the area, 60 cm².
What is the perimeter of a rectangle 10 cm long and 3 cm wide?
- A26 cm✓
- B30 cm
- C13 cm
- D23 cm
Answer: Perimeter is the distance all the way round: 10 + 3 + 10 + 3 = 26 cm. Multiplying instead gives the area, 30 cm².
What is the area of a triangle with base 6 cm and height 4 cm?
- A12 cm²✓
- B24 cm²
- C10 cm²
- D5 cm²
Answer: Area of a triangle is half the base times the height: 6 × 4 ÷ 2 = 12 cm². Forgetting to halve gives 24, which is the rectangle it fits inside.
What is the area of a triangle with base 10 cm and height 7 cm?
- A35 cm²✓
- B70 cm²
- C17 cm²
- D8.5 cm²
Answer: Area of a triangle is half the base times the height: 10 × 7 ÷ 2 = 35 cm². Forgetting to halve gives 70, which is the rectangle it fits inside.
What is the area of a triangle with base 8 cm and height 5 cm?
- A20 cm²✓
- B40 cm²
- C13 cm²
- D6.5 cm²
Answer: Area of a triangle is half the base times the height: 8 × 5 ÷ 2 = 20 cm². Forgetting to halve gives 40, which is the rectangle it fits inside.
What is the area of a triangle with base 12 cm and height 9 cm?
- A108 cm²
- B54 cm²✓
- C21 cm²
- D10.5 cm²
Answer: Area of a triangle is half the base times the height: 12 × 9 ÷ 2 = 54 cm². Forgetting to halve gives 108, which is the rectangle it fits inside.
What is the area of a triangle with base 14 cm and height 6 cm?
- A84 cm²
- B20 cm²
- C42 cm²✓
- D10 cm²
Answer: Area of a triangle is half the base times the height: 14 × 6 ÷ 2 = 42 cm². Forgetting to halve gives 84, which is the rectangle it fits inside.
A square has a perimeter of 16 cm. What is the length of one side?
- A16 cm
- B8 cm
- C5 cm
- D4 cm✓
Answer: A square has four equal sides, so divide the perimeter by 4: 16 ÷ 4 = 4 cm.
A square has a perimeter of 24 cm. What is the length of one side?
- A24 cm
- B12 cm
- C6 cm✓
- D10 cm
Answer: A square has four equal sides, so divide the perimeter by 4: 24 ÷ 4 = 6 cm.
A square has a perimeter of 36 cm. What is the length of one side?
- A36 cm
- B18 cm
- C13 cm
- D9 cm✓
Answer: A square has four equal sides, so divide the perimeter by 4: 36 ÷ 4 = 9 cm.
A square has a perimeter of 44 cm. What is the length of one side?
- A44 cm
- B22 cm
- C15 cm
- D11 cm✓
Answer: A square has four equal sides, so divide the perimeter by 4: 44 ÷ 4 = 11 cm.