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Question

A model of a ship is made in the ratio 1:200.
(i) The length of the model is 4 m. Calculate the length of the ship.
(ii) The area of the deck of the ship is 16,0000 m2. Find the area of the deck of the model.

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Solution

Given a model of a ship is made in the ratio 1:200
So, the scale factor k=1200
(i) Length of the model =k× actual length of the ship
Length of the model =1200× actual length of the ship
Since, length of the model is=4 m
actual length of the ship=200×4=800
(ii) Area of the deck of the model =k2× area of the deck of the ship.
Since, area of the deck of the ship is =16,0000 m2
Therefore, Area of the deck of the model=(1200)2×160000
=1200×200×160000
=4 m2


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