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Form 2 maths(ratio)
1.A bridge with actual length 0.75 km is shown on a photo with a scale 1cm:100m.
(a) Find the length of the bridge in the photo in cm.
(b)Find the scale of another photo,such that the length of the bridge in it is 15cm.
2.The length of a road on a map with a scale 1cm: 0.25km is 6cm.
(a)Find the actual of the road in km.
(b)Find the length of the road,in cm ,on another map with a scale 1:60000.
3.The length of a certain highway is a cm on a map with a scale 1cm:4.5km and
b cm on another map with a scale 1:250000.What is the ratioof a to b.
4.Amy rides a bicycle from city A to city B at a speed of 30km/h.The distance
between the two cities is measured to be 1.5 cm on a map. If Amy uses 12
minutesto complete the journey, find thw scale of the map in the form 1:n.
- Anonymous8 years agoFavorite Answer
b. 1cm:50m (15*a=750)
3 5:9 (4.5*1000*100a=250000b)