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1)一个cubetotalsurfacearea382squareft,求所有边长2)IfNispositivenumber,theprimenumberofbetweenN+1andN+6cannotbe

题目详情
1)一个cube total surface area 382 square ft,求所有边长
2)If N is positive number,the prime number of between N+1 and N+6 cannot be
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答案和解析
设立方体边长为x,则6*x^2=382 x=7.979 ft
2)N>0,设the prime number 为x
因为N+1>1,N+6>6,所以x>1,so