Answer
a, $4034.05$
b, $0.334$
c, $0.055098$
d, $54.61$
Work Step by Step
When determining the correct number of significant figures in the result of multiplication and division calculations, The result of a multiplication or division should carry the same number of significant figures as the factor with the least number of significant figures
a, $45.3254\times89.00205$ = $4034.05$
b, $0.00740\times45.0901$ = $0.334$
c, $49857\div904875$ = $0.055098$
d, $0.009090\times6007.2$ = $54.61$
