Answer:
17. +5-2-1=+2
18. -7-6-2=15
19. +11-9-4=-2
20.+4-8+6=+2
Step-by-step explanation:
2√48= 13.86
3√147= 36.37
Perimeter: 13.86+13.86+36.37+36.37= 100.46
56 is the answer to the question hi
a
