[填空题]
A right pyramid has apex V and square base ABCD, wissciase(,(phd7imo vm5 g5s5 2rw 9c 3thf w )s5v0 ux*oa-oa(yf AB = 3 cm. The vertical height of the pyramid, VM, isafso )0w xv(*5yfa ou- 12 cm.
1.Calculate the length of VA. cm
2.Calculate the volume of the pyramid. $cm^3$