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A building casts a shadow that is 432m long. At the same time a person who is 2m casts a shadow 6m long . how high is the building.



Height of the person : 2m           length of the shadow: 6m
height of the building: ? (x)         length of the shadow:432m
                Direct variation ....so cross multiplication

∴  x =   2 ×  432 ÷ 6
       =  144m

therefore the height of the building is 144m

Hope it's useful :)
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