5. An eraser has the dimensions shown at the right. What is the area of the eraser? A. \( 19 \mathrm{~cm}^{2} \) B. \( 39 \mathrm{~cm}^{2} \) C. \( 78 \mathrm{~cm}^{2} \) D. \( 120 \mathrm{~cm}^{2} \)
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Beyond the Answer
To find the area of the eraser, you need to multiply its length by its width. If the dimensions were, for example, 6 cm by 3 cm, the area would be \( 6 \, \text{cm} \times 3 \, \text{cm} = 18 \, \text{cm}^2 \). However, since I don't have the specific dimensions given, just substitute the values you have to calculate the area correctly! Don’t forget, it’s essential to double-check your calculations! A common mistake is mixing up length and width or forgetting to use the same units. Ensure everything is in centimeters for a smooth calculation. If you find yourself getting confused, drawing a simple diagram can help visualize the problem and verify your measurements!
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