Question

what is the perimeter in yards of a triangle with one leg measuring 9 yards, another leg measuring 9 yards, and the last leg measuring 2 yards? (note that you do not need to enter \yards\ in the answer, only the number)?

Explanation:

Step1: Recall the formula for perimeter

Perimeter of a triangle \(P=a + b+ c\), where \(a\), \(b\), \(c\) are the side - lengths.

Step2: Substitute the values

Here \(a = 9\), \(b = 9\), \(c = 2\). Then \(P=9 + 9+2\).

Step3: Calculate the sum

\(9+9+2=(9 + 9)+2=18 + 2=20\).

Answer:

20