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23 May, 16:10

Find the length of the side of a triangle. Side a = 4 cm, and side b = 9 cm. The perimeter is 19 cm. Use P = a + b + c.

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  1. 23 May, 16:24
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    The answer is 6cm

    Using (P=a+b+c) you'll have 19=4+9+c and you want to solve for c. To do this you can use the same equation.

    19=4+9+c

    19=13+c

    6=c
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