Question

please help!!!!!!!!!!!!!!!

Answer 1

$=\frac{1}{8} + \frac{1}{2} + \frac{7}{2} \\ =lcm \: of \: 8 \: and \: 2 \: and \: 2 \: is \: 8 \\ =\frac{1 + 4 + 28}{8} \\ =\frac{33}{8} \\ hence,the\:the\:total\:lenght\:of\: pencil\:is\:\frac{33}{8}cm$