Question

The length of a line is y centimetres. Write down an expression, in terms of y, for the length of the line in millimetres.

Answer 1

$Given \: length \:of \: a \: line = y \:cm$

$length \:of \: a \: line = y \times 10 \:mm$

/* We know that ,*/

$\boxed {\pink { 1\:cm = 10\:mm }}$

$length \:of \: the\: line = 10y \:mm$

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Answer 2

Some information :

• 1cm = 10mm

• 1mm = 1/10cm

Solution :

Length of line = y cm

____________________

length of line in mm = y × 10mm

⇒ length of line in mm = 10y mm

★ length of line in mm is 10y mm