1.

The number of significant figures in (0.04)^2 + (0.25)^2is :

Answer»

one
two
three
four

Solution :`(0.04)^2+ (0.25)^2 = 0.0016 + 0.0625 = 2 XX 10^(-3) + 62 + 10^(-3)`
(up to correct significant figures)
` = 64 xx 10^(-3)`
Number of significant figures = 2


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