7mm high flagstaff have a shadow which is 8.2 m long what is the height of the building which casts a shadow 20.5 m in length at that same moment .
Please answer using unitary method
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Answer:
height = 7m
length of the shadow =8.2m
length of the shadow of the building = 20.5 m
we have to find the height of the building by unitary method
Step-by-step explanation:
let the height of the building be x
7–8.2
x–20.5
x=7*20.5/8.2
x=143.5/8.2
x=1435/82
x=17.5m
I hope it's clear
the height of the building is 17.5 m
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