If the radii of the top and bottom of a bucket having slant height \( 45 \mathrm{~cm} \) are \( ...

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If the radii of the top and bottom of a bucket having slant height \( 45 \mathrm{~cm} \) are \( 28 \mathrm{~cm} \) and \( 7 \mathrm{~cm} \) respectively, then find the curved surface area of the bucket.
a. \( 4950 \mathrm{~cm}^{2} \)
b. \( 4800 \mathrm{~cm}^{2} \)
c. \( 4900 \mathrm{~cm}^{2} \)
d. \( 4958 \mathrm{~cm}^{2} \)
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