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Correct 241.34(3 x 103)2 to 4 significant ...

Correct 241.34(3 x 103)2 to 4 significant figures

A.

0.0014

B.

0.001448

C.

0.0022

D.

0.002172

Correct answer is D

first work out the expression and then correct the answer to 4 s.f = 241.34..............(A)

(3 x 10-3)2............(B)

= 32x2

= 1103 x 1103

(Note that x2 = 1x3)

= 24.34 x 32 x 1106

= 2172.06106

= 0.00217206

= 0.002172(4 s.f)