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As shown in the figures, two poles of he...

As shown in the figures, two poles of height 8m and 4m are perpendicular to the groudn. If the length of shadow smaller pole due to sunlight is 6 m then long will be the shadow of the bigger pole of the same time?

Text Solution

Verified by Experts

`Pr `and `AC` are two poles who have their shadows as `QR` and `BC` respectively.
The shadows are formed at the same time.
`:.DeltaPQR~DeltaABC`
`:.(PR)/(AC)=(QR)/(BC)`
`:.(PR)/(AC)=(QR)/(BC)`……[Corresponding sides of similar triangles are proportional]
`:.(4)/(8)=(6)/(x)`
`:.4xx x=8xx6 :. x=(8xx6)/(4)`
`:.x=12 : BC=12m`
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