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Q.

Express 45 mm in cm.

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a

0.45 cm

b

45 cm

c

4.5 cm

d

450 cm

answer is B.

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Detailed Solution

We know that,

1 cm = 10 mm

1 mm = 110 cm

∴ 45 mm = 45×110 cm = 4510 cm = 4.5 cm

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