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a) 4*√2=4√2cm
b)√3*√2=√6dm
c)5√2*√2=5*2=10mm
2.
d√2=a
a)2*√2=2√2
2√2*4=8√2m
b)5√3*√2=5√6
5√6*4=20√6dm
c)3√2*√2=3*2=6
6*4=24mm
d)2√10*√2=2√20
2√20=2*2√5=4√5
4√5*4=16√5cm