X=15
Y=3
2(15)=30
3(3)=9
30+9=39
The effect of doubling the length and width have on the perimeter would be 2x bigger
Answer:
21
Step-by-step explanation:

Multiplying both sides by 7, we get

The two 7s on the left cancel out to give 1, so

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Step-by-step explanation:
Hey mate..Area of shaded region= 115.5cm^2