A piece of art is in the shape of an equilateral triangle with sides of 7 inches each. Find the area of the piece of art to the nearest tent

Question

A piece of art is in the shape of an equilateral triangle with sides of 7 inches each. Find the area of the piece of art to the nearest tenth. Explain how you know.

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Tryphena 4 years 2021-07-22T02:54:54+00:00 1 Answers 32 views 0

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  1. Maris
    0
    2021-07-22T02:56:06+00:00
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    Answer:

    21.2 in²

    Step-by-step explanation:

    The area of an equilateral triangle is given as :

    Area, A = √3/4 * a²

    Where, a = side length of the equilateral triangle

    a = 7 inches ; Recall that all sides of an equilateral triangle are the same.

    Put a = 7 in the equation :

    A = √3/4 * a²

    A = √3/4 * 7²

    A = 0.4330127 * 49

    A = 21.217 in²

    Area, A = 21.2 in²

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )