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Find the length and perimeter of a recta...

Find the length and perimeter of a rectangle, whose area = 120 `cm^(2)` and breadth = 8 cm.

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To solve the problem of finding the length and perimeter of a rectangle given its area and breadth, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Formula for Area of a Rectangle**: The area \( A \) of a rectangle is given by the formula: \[ A = \text{Length} \times \text{Breadth} \] 2. **Substitute the Given Values**: We know the area \( A = 120 \, \text{cm}^2 \) and the breadth \( B = 8 \, \text{cm} \). We can substitute these values into the area formula: \[ 120 = \text{Length} \times 8 \] 3. **Solve for Length**: To find the length \( L \), we can rearrange the equation: \[ L = \frac{120}{8} \] Now, perform the division: \[ L = 15 \, \text{cm} \] 4. **Calculate the Perimeter**: The perimeter \( P \) of a rectangle is given by the formula: \[ P = 2 \times (\text{Length} + \text{Breadth}) \] Substitute the values of length and breadth: \[ P = 2 \times (15 + 8) \] Calculate the sum inside the parentheses: \[ P = 2 \times 23 \] Now, perform the multiplication: \[ P = 46 \, \text{cm} \] ### Final Answers: - Length of the rectangle: \( 15 \, \text{cm} \) - Perimeter of the rectangle: \( 46 \, \text{cm} \)
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ICSE-AREA OF A TRAPEZIUM AND A POLYGON-EXERCISE 20(B)
  1. Find the length and perimeter of a rectangle, whose area = 120 cm^(2)...

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  2. The perimeter of a rectangle is 46 m and its length is 15 m. Find its...

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  3. The diagonal of a rectangle is 34 cm. If its breadth is 16 cm, find i...

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  4. The area of a small rectangular plot is 84 m^(2) If the difference b...

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  5. The perimeter of a square is 36 cm, find its area.

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  6. Find the perimeter of a square whose area is 1.69 m^(2) .

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  7. The diagonal of a square is 12 cm long, find its area and length of o...

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  8. The diagonal of a square is 15 m, find the length of its one side and...

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  9. The area of a square is 169 cm^(2). Find its : (i) one side (ii) pe...

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  10. The length of a rectangle is 16 cm and its perimeter is equal to the ...

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  11. The perimeter of a square is numerically equal to its area. Find its ...

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  12. Each side of a rectangle is doubled. Find the ratio between : (i) ...

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  13. In each of the following cases ABCD is a square and PQRS is a rectang...

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  14. A path of uniform width, 3 m, runs around the outside of a square fie...

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  15. A path of uniform width, 2.5 m, runs around the inside of a rectangul...

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  16. The length of a hall is 18 m and its width is 13.5 m. Find the least ...

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  17. A rectangular field is 30 m in length and 22 m in width. Two mutually...

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  18. The length and the breadth of a rectangular field are in the ratio 5:4...

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  19. The length and the breadth of a conference hall are in the ratio 7:4 a...

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