Find y correct to three significant figures-- find r in


Question 1:
Given that y3=log3√81, find y correct to three significant figures.

Question 2:
Find r in V=(4/3)Πr2, where V=311, Π = 3.14

Question 3:
2x+y = 16 and 42x-y=(1/4). Find the ratio of y-x:2y.

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Engineering Mathematics: Find y correct to three significant figures-- find r in
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