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Math Help - Volume of a solid

  1. #1
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    Volume of a solid

    Th question is :
    Consider the region bounded by y = cos(x), y = 0, x = 0, and x = /4. Rotate the region around the x-axis. Sketch the region. Write an integral giving the volume of the solid. Give your answer using the form below.

    What i got was that A=0 B=pi/4 and the integral is pi*cos(x)^2 dx
    Im not sure if this is correct can anyone double check me please? thanks
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  2. #2
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    Quote Originally Posted by acosta0809 View Post
    Th question is :
    Consider the region bounded by y = cos(x), y = 0, x = 0, and x = /4. Rotate the region around the x-axis. Sketch the region. Write an integral giving the volume of the solid. Give your answer using the form below.

    What i got was that A=0 B=pi/4 and the integral is pi*cos(x)^2 dx
    Im not sure if this is correct can anyone double check me please? thanks
    Looks good to me.
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  3. #3
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    Im doing my homework on this web program named web assign and i tried to input the answer as pi*(cos(x))^2 but it keeps saying its wrong, does anyone have experience with this program am i entering it in a format it does not like?
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  4. #4
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    Quote Originally Posted by acosta0809 View Post
    Im doing my homework on this web program named web assign and i tried to input the answer as pi*(cos(x))^2 but it keeps saying its wrong, does anyone have experience with this program am i entering it in a format it does not like?
    Perhaps you're meant to evaluate the integral and submit what you get as your answer.
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