Question

find the perimeter of the polygon.
the perimeter is

Explanation:

Step1: Recall the formula for perimeter

The perimeter \(P\) of a polygon (here a triangle) is the sum of its side lengths. If the side lengths are \(a\), \(b\), and \(c\), then \(P=a + b + c\).

Step2: Identify the side lengths

Let \(a = 7\mathrm{cm}\), \(b=9\mathrm{cm}\), and \(c = 10\mathrm{cm}\).

Step3: Calculate the perimeter

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Answer:

\(26\mathrm{cm}\)