Answer:
8 m
Explanation:
The perimeter of the figure is the sum of all the sides, so if the perimeter is 43 m, we can write the following equation:
15 m + 10 m + 10 m + x = 43 m
Then, add the similar terms:
(15 m + 10 m + 10 m) + x = 43 m
35 m + x = 43 m
Subtract 35m from both sides:
35 m + x - 35m = 43 m - 35 m
x = 8m
Therefore, the value of x is 8 m
