√3.2x10^2x√0.02x10^5
=√(3.2x10^2x0.02x10^5)
=√(3.2x0.02x10^7)
=√(0.064x10^7)
=√(0.64x10^6)
=√(0.8²x10^6)
=0.8x10³
=800