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Question:

Find the total surface area of a cylinder with diameter of base 28 cm and height 70 cm.

Explanation:

Total surface area = 2πrh + 2πr²

= 2 × 22/7 × 14 × 70 + 2 × 22/7 × 14²

= 6160 + 1232

= 7392

Hence, option (d).