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A man wishes to determine the height of ...

A man wishes to determine the height of a tall building . In the middle of the horizontal field next to the buliding, there is a sign post whose top measures to be 2.5 m above the ground. The man then backup from the post away from the building until the top of the post just lines up with the top of the building and marks the spot where his feet are. the man then measures the distances shown in the adjoining figure. if the eyes of a man standing on the ground are 1.4 m a bove the ground, find the height of the building.

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The correct Answer is:
30 m
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NAGEEN PRAKASHAN ENGLISH-TRIANGLES -Exercise 6b
  1. the perimeters of two similar triangles are 40 cm and 30 cm respectiv...

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  2. In the given figure AD and CE are two altitude of triangleABC. Prove t...

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  3. D is a point on the side BC of triangleABC such that angleADC= angleBA...

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  4. The diagonal B D of a parallelogram A B C D intersects the segment A E...

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  5. Prove that the line segments joining the mid-points of the sides of a ...

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  6. Two triangles B A Ca n dB D C , right angled at Aa n dD respectively, ...

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  7. In a triangle A B C , let P and Q be points on AB and AC respectively...

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  8. from the adjoining figure, prove that trianglePQR~triangleABC. Hence p...

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  9. In Figure, A D and B E are respectively perpendiculars to B C and A ...

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  10. In a triangle A B C ,\ \ A D|B C and A D^2=B DxxC Ddot Prove that A ...

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  11. If one diagonal of a trapezium divides the other diagonal in the ratio...

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  12. One angle of a triangle is equal to one angle of another triangle and ...

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  13. In the adjoining figure two medians AD and BE of a triangleABC meet ea...

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  14. In an isosceles triangle A B C, the base A B is produced both the way...

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  15. Two poles of height a metres and b metres are p metres apart. Prove th...

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  16. E si a point on side AD produced of a parallelogram ABCD and BE inters...

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  17. In a right angled triangle with sides a and b and hypotenuse c ,...

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  18. in the given figure, if triangleABE cong triangleACD prove that triang...

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  19. A man wishes to determine the height of a tall building . In the middl...

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  20. In trianglePQR, angleP=72^(@), M is the mid point of side QR, and L an...

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