The surface integralx2 + y2 + z2 = 9 is _______.

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The surface integral

x² + y² + z² = 9 is _______.

1. 213
2. 232
3. 222
4. 216

Correct Option: D

By Gauss divergence theorem,
∫_s F.n ds = &int_v divF dV
Here F = 9xi - 3yj
div F = 9 - 3 = 6