i need yur help with this..
posted by anonymous .
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 agree with your first answer, but not your second answer.

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

Yes, 105mm3 is correct.

Thank you.

You're welcome.

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.