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Sagot :

Answer:

Step-by-step explanation:

25) hypotenuse² = base² + altitude²

                            = 10² + 8²

                            = 100 + 64

                            = 164

hypotenuse = √164 = 12.8

Perimeter = 10  +8 + 8 + 12.8 + (12.8 -10)

                 = 10 + 8 + 8 + 12.8 + 2.8

                 = 41.6