the perimeter of the scalene triangle is 54.6 cm. which equation can be used to find the value of b if side…

the perimeter of the scalene triangle is 54.6 cm. which equation can be used to find the value of b if side a measures 8.7 cm? 8.7 + b = 54.6 17.4 + b = 54.6 26.1 + b = 54.6

the perimeter of the scalene triangle is 54.6 cm. which equation can be used to find the value of b if side a measures 8.7 cm? 8.7 + b = 54.6 17.4 + b = 54.6 26.1 + b = 54.6

Answer

Answer:

C. $26.1 + b=54.6$

Explanation:

Step1: Find the length of side $3a$

Given $a = 8.7$ cm, then $3a=3\times8.7 = 26.1$ cm.

Step2: Use the perimeter formula

The perimeter of a triangle $P=a + b+3a$. Substituting the known values, with $P = 54.6$ cm and $3a = 26.1$ cm, we get $26.1 + b=54.6$.