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Multiple choice

A spherical sweet has radius of 7 cm. It is cut by a knife, d cm from its centre into two different pieces. Find the value of 'd' such that the cumulative surface area of the two pieces is 3/14 more than the sweet's original surface area.

  1. 5.3 cm

  2. 4.3 cm

  3. 8.3 cm

  4. 3.3 cm

  5. 7.3 cm

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