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6 May, 14:39

The area of the numbered triangle on a shuffle board court is 27 ft2. Its height is 3 feet more than the length of the base. Find the length of the base and the height. Base ft Height ft

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  1. 6 May, 18:27
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    Base = 6ft

    Height = 9ft

    Step-by-step explanation:

    Area of a triangle: 1/2 x base length x height

    Base = b

    Height = b+3

    27 = 1/2 x b x (b+3)

    27 / (1/2) = b (b+3)

    54 = b^2 + 3b

    0=b^2 + 3b - 54

    Applying the quadratic formula

    For: ax2 + bx + c

    a=1; b=3; c = -54

    x = [ - b ± √b²-4ac] / 2a

    Replacing with the values given:

    x = [ - 3 ± √ (3) ²-4 (1) - 54] / 2 (1)

    x = [ - 3± √9 + 216] / 2

    x = [-3 ± √225] / 2

    x = [ - 3 ± 15] / 2

    Positive:

    x = [ - 3 + 15] / 2 = 12/2 = 6

    b = 6 ft (base length)

    Height = b+3 = 6+3 = 9 ft

    Feel free to ask for more if needed or if you did not understand something.
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