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24-05-2022
Mathematics

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I have no clue on this one either

I have no clue on this one either class=

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Аноним Аноним

24-05-2022

Answer:

Area of the triangle = 210 cm^2 .

Step-by-step explanation:

Perimeter of triangle = 4x + 1 + 3x - 1 + 3x = 70

10x = 70 - 1 + 1 = 70

x = 7.

Area A = 1/2 * base * height

= 1/2 * 3x * (3x - 1)

= 1/2 * 3(7) * (3(7) -1)

= 1/2 * 21 * 20

= 210.

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