若□ABCD的周长为100cm,两条对角线相交于点O,△AOB的周长比△BOC的周长多10cm,那么AB= cm,BC= cm.
(-1)2n =______;(-1)2n+1 =________;
(-0.1)3=_______;
(-5) 2 =________;
(-3)3 =__________;
(-1)9=_____;