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irakobra [83]
3 years ago
5

Know very hard neeed help . humanity

Mathematics
1 answer:
egoroff_w [7]3 years ago
3 0

Answer:

AB = 17 m, AC ≈ 19.2 m

Step-by-step explanation:

Drawing a line from A to the base creates a right triangle

with legs 8 and (25 - 10 ) = 15

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

AB² = 15² + 8² = 225 + 64 = 289 ( take the square root of both sides )

AB = \sqrt{289} = 17 m

------------------------------------

Using Pythagoras' identity i right triangle ABC

AC² = AB² + BC² = 17² + 9² = 289 + 81 = 370 ( take square root of both sides )

AC = \sqrt{370} ≈ 19.2 m ( to 1 dec. place )

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