[填空题]
A right pyramid has ap nz./f(vzl6 w-0/rgnxhq1 wiht mk65gex V and square base ABCD, with.m hrczd0je;z y o *jd:x2vy3/ AB =3 cm. The vertical height of thjx/hz;jr d: c.yy 2dm z*o3e0ve pyramid, VM, is 12 cm.
1.Calculate the length of VA. cm
2.Calculate the volume of the pyramid. $cm^3$