2 years ago

Pls help me

Mathematics

1 answer:

Lesechka [4]2 years ago

5 0

Answer:

Step-by-step explanation:

when x=4

area=4²+14×4+c=16+56+c=72+c

8²=64

9²=81

72+c=81

c=81-72=9

area=81 units²

length of each side=√81=9 units

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