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$20 cm$ equals to

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200 m

20 m

200 mm

20 km

answer is C.

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Detailed Solution

20 cm

equals to

200 mm

.
A metre scale is graduated (or marked) in 100 centimetres, and each centimetre is further divided into ten millimetre parts.

1 m = 100 cm

1 cm = 10 mm

According to the submultiples of the standard unit of measureme
therefore

20 cm = 20 \times 10 mm

= 200 mm

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