<h3>
Answer: x = 29</h3>
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Work Shown:
x+61 = 90
x+61-61 = 90-61
x = 29
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Explanation:
- The first step is valid because the two angles x and 61 are complementary angles. They form a right angle or 90 degree angle.
- In the second step, I subtracted 61 from both sides to undo the "+61".
Answer: 2.2876792e+13
Step-by-step explanation: calculator
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The formula of an area of a square: ![A=a^2](https://tex.z-dn.net/?f=A%3Da%5E2)
a - side
We have: ![A=324\ in^2](https://tex.z-dn.net/?f=A%3D324%5C%20in%5E2)
substitute:
![a^2=324\to a=\sqrt{324} \to a=18\ in](https://tex.z-dn.net/?f=a%5E2%3D324%5Cto%20a%3D%5Csqrt%7B324%7D%20%5Cto%20a%3D18%5C%20in)
The fromula of a perimeter of a square is: ![P=4a](https://tex.z-dn.net/?f=P%3D4a)
substitute:
![P=4\cdot18=72\ in^2](https://tex.z-dn.net/?f=P%3D4%5Ccdot18%3D72%5C%20in%5E2)