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17-03-2020
Mathematics

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cover an isosceles triangle with a height of 9 centimeters and a base of 7 centimeters in fabric. How much fabric does he need?

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17-03-2020

Answer:

31.5 cm²

Step-by-step explanation:

Basically, you just need the area of the triangle.

The area of a triangle is base * height / 2

Plug in your base and height and you'll get

7 * 9 / 2 = 63 / 2 = 31.5 cm²

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