一个圆锥的底面积是9cm2,体积36cm3,高是______.
36÷13÷9,
=36×3÷9,
=108÷9,
=12(厘米);
答:高是12厘米.
故答案为:12厘米.
若α+β=225°,则(1+tanα)•(1+tanβ)的值为______.