A tree is broken at a height of 5 m from the ground and its body touches the ground at a distance of 12 m from the base of the tree. Find the original height of the tree.
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★Correct Question:-
A tree is broken at a height of 5 m from the ground and its body touches the ground at a distance of 12 m from the base of the tree. Find the original height of the tree.
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★ Given:-
- A tree is broken at a height of 5 m from the ground.
- Its top reaches the ground at a distance of 12 m from the base of the tree.
★ To Find:-
The original height of the tree.
★ Solution:-
Let AB be the tree of height (x + 5) m before it broke at point C.
Let the top A touch the tree after it broke.
Then, ∆DBC is a right angle.
Referring to the figure,
CD² = DB + BC²
⇒ x² = (12² + 5²)
⇒ x = (144 + 25)
⇒ x² = 159
⇒ x² = (13)²
⇒ x = 13
Original height of the tree = (x + 5) m = (13 + 5) m = 18 m
∴ The original height of the tree = 18 m
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