Question

express the following as cm using decimals options a 2mm b 30mm​

Answer 1

10mm = 1cm

2mm = 0.2cm

30mm = 3.0 cm

Answer 2

A-) 2mm = 0.2 cm

Solution:-

∴ 10mm = 1cm

$∴1mm = \frac{1}{10} cm$

$∴2mm = \frac{1}{10} \times 2mm$

$= \frac{2}{10} cm \\ = 0.2cm$

So,Correct Answer is = 0.2 cm

B-) 30mm = 3.0

Solution:-

$∴10mm = 1cm$

$∴1mm = \frac{1}{10} cm$

$∴30mm = \frac{1}{10} \times 30mm$

$= \frac{3}{10} cm \\ = 3.0cm$

So,Correct Answer is = 3.0cm