With isobaric expansion, the volume of air under the piston changed by 3 * 10 ^ ~ 2m3. What work is done

With isobaric expansion, the volume of air under the piston changed by 3 * 10 ^ ~ 2m3. What work is done in this case if the air pressure is 8 * 10 ^ 5Pa?

A = pV = 8 * 10 ^ 5 * 3 * 10 ^ -2 = 24000J

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