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Anonymous
Anonymous asked in 科學及數學數學 · 8 years ago

1題,真係好急><(20點)

On a map,1mm represents an actual distance of 2 km.(Tips: the scale of the map is 1:90 000 000)

(a)Find the scale of the map in the form 1:n.

(b) If a road id 2.3 cm long on this map ,find its actual length in km.

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