Question

4.2 perimeter of quadrilaterals and triangles
find the missing side if the perimeter equals 24 inches.
8 in.
10 in.
?
the missing side length = inches

Explanation:

Step1: Recall perimeter formula

Perimeter of a triangle $P=a + b+ c$, where $a,b,c$ are side - lengths. Let the missing side be $x$. Given $P = 24$, $a = 8$, $b = 10$.

Step2: Set up the equation

$24=8 + 10+x$.

Step3: Simplify the right - hand side

$8 + 10=18$, so the equation becomes $24=18 + x$.

Step4: Solve for $x$

Subtract 18 from both sides: $x=24 - 18$.
$x = 6$.

Answer:

6