[填空题]
Peter is playing on a swing during amf v37cv.qyqjf-vklw :/zr, jj*7pv9 schoolardhihy) p0a 8+9ka g4c3dso ) lunch break. The height of the first swi0d)y8a3ohp9 ihg sc)r kd aa+4ng was 2 $\mathrm{~m}$ and every subsequent swing was 84 % of the previous one. Peter's friend, Ronald, gives him a push whenever the height falls below $1 \mathrm{~m}$ .
1. Find the height of the third swing.≈
2. Find the number of swings before Ronald gives Peter a push. n =
3. Calculate the total height of swings if Peter is left to swing until coming to rest.
