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Perimeter of a square is 44 cm. The peri...

Perimeter of a square is 44 cm. The perimeter of a rectangle is equal to the perimeter of this square. The length of the rectangle is 5 cm more than the side of the square. The sum of areas (in `cm^(2)`) of the square and the rectangle is

A

217

B

229

C

169

D

140

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem step by step, we will follow these calculations: ### Step 1: Find the side length of the square. The perimeter of a square is given by the formula: \[ P = 4 \times \text{side} \] Given that the perimeter of the square is 44 cm, we can set up the equation: \[ 4 \times \text{side} = 44 \] To find the side length, divide both sides by 4: \[ \text{side} = \frac{44}{4} = 11 \text{ cm} \] ### Step 2: Calculate the area of the square. The area \( A \) of a square is given by: \[ A = \text{side}^2 \] Substituting the value of the side we found: \[ A = 11^2 = 121 \text{ cm}^2 \] ### Step 3: Determine the perimeter of the rectangle. Since the perimeter of the rectangle is equal to the perimeter of the square, it is also 44 cm. The perimeter of a rectangle is given by: \[ P = 2 \times (\text{length} + \text{breadth}) \] Let the breadth of the rectangle be \( b \) and the length be \( l \). Thus: \[ 2 \times (l + b) = 44 \] Dividing both sides by 2: \[ l + b = 22 \] ### Step 4: Find the length of the rectangle. According to the problem, the length of the rectangle is 5 cm more than the side of the square: \[ l = \text{side} + 5 = 11 + 5 = 16 \text{ cm} \] ### Step 5: Calculate the breadth of the rectangle. Using the equation from Step 3: \[ l + b = 22 \] Substituting the length we found: \[ 16 + b = 22 \] To find \( b \), subtract 16 from both sides: \[ b = 22 - 16 = 6 \text{ cm} \] ### Step 6: Calculate the area of the rectangle. The area \( A \) of a rectangle is given by: \[ A = l \times b \] Substituting the values of length and breadth: \[ A = 16 \times 6 = 96 \text{ cm}^2 \] ### Step 7: Find the sum of the areas of the square and the rectangle. Now, we can find the total area: \[ \text{Total Area} = \text{Area of Square} + \text{Area of Rectangle} \] \[ \text{Total Area} = 121 + 96 = 217 \text{ cm}^2 \] ### Final Answer: The sum of the areas of the square and the rectangle is **217 cm²**. ---
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