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Find area of the region bounded by the parabola x2 = 4y, the Y-axis lying in the first quadrant and the lines y = 3 - Mathematics and Statistics

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प्रश्न

Find area of the region bounded by the parabola x2 = 4y, the Y-axis lying in the first quadrant and the lines y = 3

बेरीज
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उत्तर


Given equation of the parabola is x2 = 4y

∴ x = `2sqrt(y)`    ......[∵ In first quadrant x > 0]

∴ Required area = `int_0^3 2sqrt(y)  "d"y`

= `2 int_0^3 sqrt(y)  "d"y`

= `3[(y^(3/2))/(3/2)]_0^3`

= `4/3[(3)^(3/2) - 0]`

= `4/3(3sqrt(3))`

= `4sqrt(3)` sq.units

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पाठ 1.7: Application of Definite Integration - Q.2

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