Answer:
Step-by-step explanation:
set the equation for the area equal to the equation of the perimeter.
Then solve for x
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Figure a
area = perimeter
3x = 2(x + 3)
Distribute
3x = 2x + 6
subtract 2x from both sides
x = 6
perimeter
p = 2(x + 6)
p = 2(3 + 63)
p = 18
Area
a = 3x
a = 3*6
a = 18
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Use the same method on the remaining figures
