The sum is adding
3 times a number is 3x
And 15 is +15
3x+15
The perimeter:
40+35+16+16+125.7= 232.7 m
btw lowkey frustrating that they alternate between cm and m
At this case it could be calculated like this: 7+5*20=107
Answer:
Step-by-step explanation:
27.068
28.08
28.15
29.94
