Answer :

Let r be the radius of the sphere and Δr be the error in measuring the radius.

Now, it is given that r = 9m and Δr = 0.03m

We know that surface area of sphere (S) =


= (8πr)Δr

= 8π (9)(0.03)m2

= 2.16π m3

Therefore, the approximate error in calculating its surface area is 2.16π m3.

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