I need ——of rope to tie all the books为什么用a length length是什么词

I need ——of rope to tie all the books为什么用a length length是什么词 the length of a rectangle 什么意思 1.If the length,in inches,of all three sides of a triangle a "length:"+a.length"\n" 英语翻译⒈the length of the perimeter of a right triangle is 60 i 英语翻译(1/2)In order to reduce the length of this file,I have u All of the books I think prefer a chiners one 为什么要用all of A solar day is the length of time it takes the earth to revo A solar day is the length of time ____ the earth to revolve A solar day is the length of time ____ the earth to moce onc a solar day is the length of time__the earth to go once arou a solar day is the length of time____the Earth to revolve on