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प्रश्न
A model of cargo tuck is made to a scale of 1:40. The length of the model is 15cm. Calculate: The base area of the truck, if the base area of the model is 30m2
उत्तर
Scale = 1:40
`"Area(model)"/"Area(truck)"` = Scale
`(30 xx (100)^2)/"Area(truck)" = (1)/(40)^2`
Area(truck) = 30 x 1600 x 104
Area(truck) = 4. x 108cm2.
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