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The area of a rectangle is 5.4m^(2). If ...

The area of a rectangle is `5.4m^(2)`. If its breadth is 1.5 m, find its :
(i) length (ii) Perimeter

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The correct Answer is:
To solve the problem step by step, we will find the length of the rectangle first and then calculate its perimeter. ### Step 1: Find the Length of the Rectangle The area of a rectangle is given by the formula: \[ \text{Area} = \text{Length} \times \text{Breadth} \] We know the area and the breadth: - Area = \(5.4 \, m^2\) - Breadth = \(1.5 \, m\) We can rearrange the formula to find the length: \[ \text{Length} = \frac{\text{Area}}{\text{Breadth}} \] Now, substituting the values: \[ \text{Length} = \frac{5.4}{1.5} \] Calculating this gives: \[ \text{Length} = 3.6 \, m \] ### Step 2: Find the Perimeter of the Rectangle The perimeter of a rectangle is given by the formula: \[ \text{Perimeter} = 2 \times (\text{Length} + \text{Breadth}) \] Now, substituting the values we have: - Length = \(3.6 \, m\) - Breadth = \(1.5 \, m\) So, we can calculate the perimeter: \[ \text{Perimeter} = 2 \times (3.6 + 1.5) \] Calculating the sum inside the parentheses: \[ 3.6 + 1.5 = 5.1 \] Now, substituting this back into the perimeter formula: \[ \text{Perimeter} = 2 \times 5.1 = 10.2 \, m \] ### Final Answers (i) Length = \(3.6 \, m\) (ii) Perimeter = \(10.2 \, m\) ---
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ICSE-AREA OF A TRAPEZIUM AND A POLYGON-EXERCISE 20(D)
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  3. Find the radius and area of a circle, whose circumference is : 22 ...

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  5. Find the radius and area of a circle, whose circumference is : 6.1...

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  6. The circumference of a circular table is 88 m. Find its area.

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  7. The area of a circle is 1386 sq. cm, find its circumference.

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  8. Find the area of a flat circular ring formed by two concentric circle...

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  9. Find the area of the shaded portion in each of the following diagrams...

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  10. Find the area of the shaded portion in each of the following diagrams...

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  11. The radii of the inner and outer circumferences of a circular-running...

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  12. A circular field of radius 105 m has a circular path of uniform width...

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  13. There is a path of uniform width 7 m round and outside a circular gar...

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  14. A wire, when bent in the form of a square, encloses an area of 484 c...

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  15. A wire, when bent in the form of a square, encloses an area of 196 cm...

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  16. The radius of a circular wheel is 42 cm. Find the distance travelled ...

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  17. The diameter of the wheel of a car is 0.70 m. Find the distance cover...

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  18. A bicycle wheel, diameter 56 cm, is making 45 revolutions in every 10...

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  19. A roller has a diameter of 1.4 m. Find : (i) its circumference ...

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  20. Find the area of the circle, length of whose circumference is equal t...

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  21. A piece of wire of length 108 cm is bent to form a semicircular arc b...

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