立方 
lì fāng 
cube 
平方 
píng fāng 
square (as in square foot, square mile, square root) 
平方米 
píng fāng mǐ 
square meter 
四方 
sì fāng 
fourway; foursided 
千方百计 
qiān fāng bǎi jì 
lit. thousand ways, a hundred plans (idiom); by every possible means 
方程式 
fāng chéng shì 
equation 
化学方程式 
huà xué fāng chéng shì 
chemical equation 
方程组 
fāng chéng zǔ 
(math.) simultaneous equations; system of equations 
平方根 
píng fāng gēn 
square root 
配方 
pèi fāng 
prescription; cooking recipe; formulation; completing the square (to solve quadratic equation, math) 
塌方 
tā fāng 
to cave in; to collapse; landslide 
塌方 
tā fāng 
