19-09-2020
Mathematics

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mhanifa mhanifa

19-09-2020

Answer:

20.6

Step-by-step explanation:

Coordinates given:

D(-3,2)
E(4,2)
F(4,-3)

Plotted, these points give a right triangle with hypotenuse DF

Distance DE = 4 - (-3) = 7
Distance EF = 2 - (-3) = 5
Distance DF = √(7²+5²) = √84 = 8.6

Perimeter

P = 7 + 5 + 8.6 = 20.6

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