two cubes each with side b are joined to form a cuboids . what is the surface area of this cuboids ?
l = 2 b ; b = b ; h = b ; surface area = 2 * ( lb + bh + hl ) = 2 * ( 2 b ^ 2 + b ^ 2 + 2 b ^ 2 ) = 10 b ^ 2 answer : b
multiply(add(multiply(multiply(const_1, const_2), const_2), multiply(const_1, const_1)), const_2)