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Answer :
The area of a circle with a radius of 7 cm is found using the formula A = \\(pi)r^2. After calculation, the area is approximately 153.86 cm^2, which is closest to option (d) 153.9 cm^2.
The area of a circle is calculated using the formula A = \\(pi)r^2. For a circle with a radius of 7 cm, you would plug the radius into the formula:
A = \\(pi)(7 cm)^2
Performing the calculation:
A = 3.14 \* 49 cm^2
= 153.86 cm^2
Since we need to respect significant figures and the radius was given with only one decimal place (implying limited precision), the area should be rounded to the nearest whole number, resulting in 154 cm^2. However, this option is not provided in the question. Among the given choices, 153.9 cm^2 is the closest answer, so we would select (d) 153.9 cm^2.
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