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3 years ago

14

△BCD is a right triangle. The length of the hypotenuse is 19 centimeters. The length of one of the legs is 13 centimeters.

1 answer:

zheka24 [161]3 years ago

3 0

<span>here we can use Pythogoras' theorem.
in right angled triangles the square of the hypotenuse is equal to the sum of the squares of the other 2 sides.
hypotenuse is 19 cm. One side is 13 cm and we need to find the length of the third side.

19</span>²<span> = 13</span>²<span> + X</span>²<span>
X - length of the third side

361 = 169 + X</span>²<span>
X</span>²<span> = 361 - 169

X</span>²<span> = 192

X = 13.85 the length of third side rounded off to the nearest tenth is 13.9 cm</span>

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