i need yur help with this..

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Find the surface area of a square pyramid with a base length of 11 cm and a slant height of 15 cm.

472 cm2
451 cm2***
781 cm2
330 cm2


Find the volume of a rectangular prism with the following dimensions:
Length = 5 mm
Base = 7 mm
Height = 3 mm


142 mm3 ***
105 mm3
126 mm3
130 mm3

  • i need yur help with this.. -

    I agree with your first answer, but not your second answer.

  • i need yur help with this.. -

    Sorry. my answer for #2 was originally 105. wasn't paying attention.

  • i need yur help with this.. -

    Yes, 105mm3 is correct.

  • i need yur help with this.. -

    Thank you.

  • i need yur help with this.. -

    You're welcome.

  • i need yur help with this.. -

    look at my answer to your first question here

    http://www.jiskha.com/display.cgi?id=1394926846

    In calculating the area of the triangle, the height is not 15.
    make a sketch of the triangle to see that 15 is the hypotenuse.

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