Rectangle Perimeter and Area Quiz

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Questions and Answers

What is the formula for the perimeter of a rectangle?

  • P = 2(l + b) (correct)
  • P = 2l + b
  • P = l + b
  • P = l x b

If the length of a rectangle is 8 cm and the breadth is 5 cm, what is the perimeter?

  • 22 cm
  • 18 cm
  • 26 cm (correct)
  • 20 cm

What is the formula for the area of a rectangle?

  • A = l + b
  • A = l x b (correct)
  • A = 2(l + b)
  • A = l - b

If the length of a rectangle is 6 cm and the breadth is 4 cm, what is the area?

<p>24 cm² (C)</p> Signup and view all the answers

A rectangle has a perimeter of 24 cm. If the length is 8 cm, what is the breadth?

<p>4 cm (D)</p> Signup and view all the answers

Flashcards

Perimeter of a rectangle

The total distance around the outside of a rectangle.

Area of a rectangle

The measurement of the surface enclosed by the rectangle.

Formula for perimeter of a rectangle

The formula for calculating the perimeter of a rectangle is P = 2(l + b), where l is the length and b is the breadth.

Formula for area of a rectangle

The formula for calculating the area of a rectangle is A = l × b, where l is the length and b is the breadth.

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Finding breadth from perimeter and length

If you know the perimeter of a rectangle and the length, you can find the breadth by using the formula P = 2(l + b). Solve for b to find the breadth.

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How to calculate the perimeter of a rectangle

Calculate the perimeter of a rectangle using the formula P = 2(l + b).

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How to calculate the area of a rectangle

Calculate the area of a rectangle using the formula A = l × b.

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Steps to find the breadth from perimeter and length

Given the perimeter of a rectangle and the length, you can find the breadth by using the following steps: 1. Divide the perimeter by 2. 2. Subtract the length from the result.

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Meaning of perimeter of a rectangle

The perimeter of a rectangle is the total length of all its sides added together.

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Meaning of area of a rectangle

The area of a rectangle is the space enclosed within its boundaries.

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Study Notes

Rectangle Perimeter and Area

  • Perimeter Formula: P = 2(l + b), where P is perimeter, l is length, and b is breadth.
  • Area Formula: A = l × b, where A is area, l is length, and b is breadth.

Example Calculations

  • Question 2: If l = 8 cm and b = 5 cm, P = 2(8 + 5) = 26 cm.
  • Question 4: If l = 6 cm and b = 4 cm, A = 6 × 4 = 24 cm².
  • Question 5: If P = 24 cm and l = 8 cm, then 2(8 + b) = 24. Solving for b gives b = 4 cm.

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