well emi.......after all its just an approximate,,,,,have u seen the range of error (its freaky) cuz of the problems and the different ways of measuring......in that curve i just tried to split it into different parts (no need to be straight) and i got and answer within the range
the 0.1mm and the 2cm part......they are scales and there are many ways to use them
wt i did was measuring the 0.1mm with my ruler and it was 1.5 cm......then i did the cross multiplication method and it worked
0.1mm -> 1.5cm
X -> 15.5cm(the total length of the worm)
the answer was 1.033 (within the range).......ohhh By the way,, the range i mentioned above is the range of the final answer of the (hw many times larger)
and to do part (ii)....measure worm B and convert it to !!(mm)!! and then
WORM B == X (range 160 to 200)
WORM A
^^^^see