jakandndjd
jakandndjd jakandndjd
  • 22-06-2020
  • Mathematics
contestada

help pls, take your time as well

help pls take your time as well class=

Respuesta :

user234509 user234509
  • 22-06-2020

Answer:

D

Step-by-step explanation:

The perimeter is 54.6.

a   +  3a      + b = 54.6.   since a = 8.7,

8.7 + 3(8.7) + b = 54.6

8.7 + 26.1 + b = 54.6

34.8 + b = 54.6

b = 54.6 - 34.8

b = 19.8

They pretty much have the exact same examples in the instruction videos with different numbers; it helps to watch the videos again.

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