Respuesta :

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Answer:

76ft.

Step-by-step explanation:

P = 2L +2H

P = 2(17) + 2(21)

P = 34 + 42

P = 76

Answer:

76 ft

Step-by-step explanation:

(21 x 2) + (17 x 2) = 42 + 34 = 76 ft