[填空题]
A 3D printer builds 1 qa.,iikj* uma set of 49 Eiffel Tower Replik5w4 f caved8,cas in different sizes. The height of the largest k d awv,cf5e84tower in this set is 64 cm. The heights of successive smaller towers are 95 % of the preceding larger tower, as shown in the diagram below.
1.Find the height of the smallest tower in this set.
$u_{49}$= .
2.Find the total height if all 49 towers were placed one on top of another.
$S_{49}$= .
