25 mm is equal to how many cm?

25mm = 2.5cm

Using the color(blue)related conversion

That is color(red)(bar(ul(|color(white)(a/a)color(black)(1cm=10mm)color(white)(a/a)|)))

rArr25mm=(2xx10mm)+(1/2xx10mm)

so we have 2+1/2cm=2 1/2=2.5cm

or using color(blue)ratio method

(1cm)/(10mm)=(xcm)/(25mm) require to calculate value of x

using color(blue)cross-multiplication

rArr10x=25rArrx=(25cancel(mm))/(10cancel(mm))=2.5 cm