at a certain time the shadow of a 7m high poul in found to be course metre at the same time the shadow of a flagstaff is found to be find the height of the flagstaff.
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Let height of flag staff be xm
A/Q, (height of pole):(height of it shadow)=(height of flag staff):(height of it shadow)
⇒ 7/4
= 6/ x
⇒x=10.5m
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