1)

how do i work out the volume?

do i work out the rectangle first then the semi circle?

http://i10.photobucket.com/albums/a1...5/DSC00515.jpg

2)

if the template is 3mm think, what is the volume in cubic millimetres?

do i split it into 2 rectangles, triangle & a circle?

http://i10.photobucket.com/albums/a1...5/DSC00517.jpg

cheers all