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>> Answer

_________

[tex] \: [/tex]

2½m = 2.5 × 100 = 250cm

Soo :

[tex] \longmapsto\frac{3}{1 \cancel0} \times 25 \cancel0[/tex]

[tex] \longmapsto3 \times 25[/tex]

[tex] \longmapsto \bold{75cm}[/tex]

DISFIGURE

Answer:

1 metre = 100 centimetres

so first we multiply the 3/10 × 21/2

WE HAVE TO LCM OF 10 , 2 is 20

[tex] \frac{3 \times 21}{20} = \frac{63}{20} [/tex]

[tex]so \: \frac{63}{20} \times 100 = \frac{6300}{20} = \frac{630}{2} \: = 315 \: centimetre[/tex]

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