[填空题]
Paper party cups in the shape of a cov d8/ +k+z,g6xokzj aa,dfc2 bs j/:nkne arez x)0 .krunrc3g5zx 0d formed from a sector of paper material. The diagram below left sho0d krxzng0) curx.3 z5ws the finished paper cup. The diagram below right shows the original paper sector used to create the cup. When the cones are formed, the straight edges of the sector join without any overlap.
1.Find the slant height of the cups, L. cm
2.Find the arc length of the sector. cm
3.Find the angle $\theta$ in radians. radians
