Guerrero Lawson
08/19/2023 · Junior High School
1. The figure below is a square what is its area. \( (2 k+24) \mathrm{cm} \) \( (4 k+8) \mathrm{cm} \)
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Step-by-step Solution
To find the area of the square, we need to know the length of one side of the square.
Given that the figure is a square, all sides are equal in length.
Let's denote the length of one side of the square as \( x \) cm.
The area of a square is given by the formula:
\[ \text{Area} = x^2 \]
We are given two expressions for the length of one side of the square:
1. \( 2k + 24 \) cm
2. \( 4k + 8 \) cm
Since the length of one side of the square is the same in both expressions, we can set the two expressions equal to each other:
\[ 2k + 24 = 4k + 8 \]
Now, we can solve for \( k \) to find the length of one side of the square.
Solve the equation by following steps:
- step0: Solve for \(k\):
\(2k+24=4k+8\)
- step1: Move the variable to the left side:
\(2k+24-4k=8\)
- step2: Subtract the terms:
\(-2k+24=8\)
- step3: Move the constant to the right side:
\(-2k=8-24\)
- step4: Subtract the numbers:
\(-2k=-16\)
- step5: Change the signs:
\(2k=16\)
- step6: Divide both sides:
\(\frac{2k}{2}=\frac{16}{2}\)
- step7: Divide the numbers:
\(k=8\)
The value of \( k \) is 8.
Now, we can substitute the value of \( k \) back into one of the expressions for the length of one side of the square to find the length of one side of the square.
Substituting \( k = 8 \) into the expression \( 2k + 24 \):
\[ 2(8) + 24 = 16 + 24 = 40 \]
Therefore, the length of one side of the square is 40 cm.
Now, we can find the area of the square by squaring the length of one side:
\[ \text{Area} = 40^2 = 1600 \, \text{cm}^2 \]
So, the area of the square is 1600 cm².
Quick Answer
The area of the square is 1600 cm².
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