State the number of significant figures in the following : (a) \( 0.007 \mathrm{~m}^{2} \) (b) \...

State the number of significant figures in the following :
(a) \( 0.007 \mathrm{~m}^{2} \)
(b) \( 2.64 \times 10^{24} \mathrm{~kg} \)
(c) \( 0.2370 \mathrm{~g} \mathrm{~cm}^{-3} \)
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(d) \( 6.320 \mathrm{~J} \)
(e) \( 6.032 \mathrm{~N} \mathrm{~m}^{-2} \)
(f) \( 0.0006032 \mathrm{~m}^{2} \)