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balandron [24]
3 years ago
7

HELP!!!! WILL MARK BRAINLIEST!!! what is the perimeter???????

Mathematics
1 answer:
melomori [17]3 years ago
5 0

Answer:

11 + \sqrt{65}

Step-by-step explanation:

The base of the triangle = 7 units ( count squares )

The right side = 4 units

Since the triangle is right, use Pythagoras' identity to find AB

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

AB² = 7² + 4² = 49 + 16 = 65 ( take the square root of both sides )

AB = \sqrt{65}, thus

Perimeter = 7 + 4 + \sqrt{65} = 11 + \sqrt{65}

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