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A balloon is pumped at the rate of 2 cm^...

A balloon is pumped at the rate of 2 `cm^3//` minute. Write the rate of increase of the surface area, when the radius is 0.5 cm.

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The correct Answer is:
`8.0cm^(2)//min`
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ARIHANT PUBLICATION-CHSE ODISHA EXAMINATION PAPER - 2018 -SHORT ANSWER TYPE QUESTIONS (ANSWER ANY THREE QUESTIONS)
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  6. Show that "sin"^(-1)(4)/(5) +2"tan"^(-1)(1)/(3) =(pi)/(2).

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  7. A bag A contains 2 white and 3 red balls and another bag B contains 4 ...

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  8. If P(A) = 0.6, P(B/A) = 0.5, find P(A uu B) when A and B are independe...

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  9. If A,B,C are matrices of order 2xx2 each and 2A+B+C =[[1,2],[3,0]] A+B...

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  10. Find the inverse of the following matrix [{:(1,1,2),(0,1,2),(1,2,1):}]...

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  11. Prove that |[a-b-c,2a,2a],[2b, b-c-a, 2b],[2c, 2c, c-a-b]|= (a+b+c)^3.

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  12. Show that the sum of the intercepts on the coordinate axes of any tang...

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  13. Show that 2sinx+tanxge3x for all x epsilon(0,(pi)/(2)).

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  14. Differentiate y=tan^(-1).(sqrt(1+x^(2))+sqrt(1-x^(2)))/(sqrt(1+x^(2))-...

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  15. Differentiate y=(siny)^(sin2x)

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  16. Test the continuity of the following function at x=0 f(x)={{:((1-e^(...

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  17. From the differential equation whose general solution is y=asint+be^t.

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  18. Solve the following differential equations (1+y^2)dx+(x-e^(-tan^(-1)...

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  19. Evaluate int (dx)/((x+1)sqrt(1-x^2))

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  20. int(0)^(1/2)(1)/(sqrt(1-x^(2)))dx.

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  21. Find the area enclosed bt the two paraboles y^2=4 ax and x^2=4ay.

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