On a map of scale 1:20000 the area of a forest is 50cm square. On another map the area of the forest is 8 cm square. Find the scale of the second map
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Dimesion of forest on map=2cm ×25cm
Dimesion of actual forest=(2×20000)×(25×20000)
Area of the actual forest=20×10`9 cm2
Scale of the second map=8cm2 : 2×10`10cm2
(By root we get) 1: 50000
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