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What is the perimeter of ABC

What is the perimeter of ABC-example-1

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Answer:

12

Explanation:

ABC is a right triangle.

AC = 4

CB = 3

The legs have lengths of 4 and 3.

Now we use the Pythagorean theorem to find AB, the length of the hypotenuse.

a² + b² = c², for legs a and b, and hypotenuse c.

(AC)² + (CB)² = (AB)²

4² + 3² = (AB)²

16 + 9 = (AB)²

25 = (AB)²

AB = 5

perimeter = sum of lengths of sides

perimeter of triangle ABC = AC + CB + AB

perimeter = 4 + 3 + 5

perimeter = 12

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