Respuesta :
well i think because it says" 2 time the height of the tree" you would divide 80 by 2 the subtract 11 which is 80/2=40 - 11=39ft tall
A) would be 39 feet tall
A) would be 39 feet tall
The height of the tree is 39 ft.
What is a Right-Angled Triangle ?
A triangle is called a right angle triangle if one of the angle is 90 degree.
The distance of the point from the bottom of the tree is 80ft
Let the height of the tree is x ft
The distance from the top is 2x+11
As a right angled triangle is forming
By applying Pythagoras Theorem
(2x+11)² = x² + 80²
4x²+ 44x +121 = x²+6400
3x² +44x -6279= 0
By solving the equation
x = 39ft
Therefore, the height of the tree is 39 ft.
To know more about Right-Angled Triangle
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