Find the area of the region bounded by y2 = 9x, x = 2, x = 4 an

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 Multiple Choice QuestionsShort Answer Type

1. Find the area of the region bounded by the curve y= x and the lines x = 1, x = 4 and the x-axis in the first quadrant.
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2.

Find the area of the region bounded by y2 = 4 x, x = 1, x = 4 and the x-axis in the first quadrant.   

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3. Find the area of the region bounded by y2 = 9x, x = 2, x = 4 and the x-axis in the first quadrant.


The equation of curve is y2 = 9x, which is right handed parabola.
Two lines are x = 2,  x = 4.
    Required area = Area ABCD
                            equals space integral subscript 2 superscript 4 straight y space dx space equals space integral subscript 2 superscript 4 3 square root of straight x space dx space equals space 3 space integral subscript 2 superscript 4 straight x to the power of 1 half end exponent dx
space equals space 3 open square brackets fraction numerator straight x to the power of begin display style 3 over 2 end style end exponent over denominator begin display style 3 over 2 end style end fraction close square brackets subscript 2 superscript 4 space equals space 3 cross times 2 over 3 open square brackets straight x to the power of 3 over 2 end exponent close square brackets subscript 2 superscript 4
equals space 2. space open square brackets left parenthesis 4 right parenthesis to the power of 3 over 2 end exponent minus left parenthesis 2 right parenthesis to the power of 3 over 2 end exponent close square brackets space equals space 2 space left square bracket space 8 space minus square root of 8 right square bracket space equals space 2 left parenthesis 8 minus 2 square root of 2 right parenthesis
equals space left parenthesis 16 minus 4 square root of 2 right parenthesis space sq. space units.


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4.

Find the area of the region bounded by y2 = x - 2, x = 4, x = 6 and the x-axis in the first quadrant.

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5. Find the area under the given curves and given lines:
(i) y = x2, x = 1, x = 2 and x-axis
(ii) y - x4, x = 1, x = 5 and x -axis
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6.

Find the area of the region bounded by x2 = 4 y, y = 2, y = 4 and the y-axis in the first quadrant.

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7. Find the area of the region lying in the first quadrant and bounded by y = 4 x2, x = 0, y = 1 and y = 4.
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8. Find the area of the region lying in the first quadrant and bounded by x2 = y - 3, y = 4, y = 6 and the y-axis in the first quadrant.
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9.

Find the area of the region bounded by x2 = 16 y, y = 1, y = 4 and the y-axis in the first quadrant.

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10. Find the area bounded by the curve y2 = 4 a (x-1) and the lines x = 1 and y = 4 a.
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