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trasher [3.6K]
3 years ago
12

Solving right triangles geometry help please

Mathematics
1 answer:
Alex73 [517]3 years ago
3 0

Answer:

(13) The third side is 14 cm

(13) The third side is 16.1 cm

Step-by-step explanation:

Given

(13) & (14)

Required

Solve

(13): Let length AB = x.

Using Pythagoras theorem.

x^2 = 12^2 + 9^2

x^2 = 144 + 81

x^2 = 225

Take positive square root of both sides

x = \sqrt{225

x = 15

(14): Let length DE = x.

Using Pythagoras theorem.

x^2 = 8^2 + 14^2

x^2 = 64 + 196

x^2 = 260

Take positive square root of both sides

x = \sqrt{260

x = 16.1 ---approximated

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