A soap bubble (surface tension 30 *10-3 N/m) has radius 2 cm The work done in bobbling the radius - Physics -

Question

A soap bubble (surface tension 30 *10-3 N/m) has radius
2 cm The work done in bobbling the radius is
a) 4 532*10-4 J
b) 2 261*10-4 J
explain step by step

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A soap bubble (surface tension 30 *10-3 N/m) has radius 2 cm. The work done in bobbling the radius is........ a) 4.532*10-4 J b) 2.261*10-4 J explain step by step.

A soap bubble (surface tension 30 10^-3N/m) has radius 2 cm. The work done in bobbling the radius is........
a) 4.53210^-4J
b) 2.261*10^-4J
explain step by step.