Math

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Across
  1. 2. six side
  2. 6. volume=(pi r^2)xh
  3. 7. the intersection of faces on a 3dshape
  4. 8. flat surface of a 3dshape
Down
  1. 1. area=a1+a2/2xh
  2. 3. c=pid
  3. 4. endpoint of two line segments of an angle
  4. 5. area=pi r^2