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what is the height of the building if it casts 35foot shadow along the ground while 12 inches rulercastsa 4 inches shadow?

Sagot :

using the concept of ratio and proportion you'll have the ratio of height of the rule as to its shadow equals the ratio of the height of the building as to its shadow or you'll have:
let h be the height of the building
12/4 = h/35ft
3(35) = h
h = 105ft