Correct \(241.34(3 \times 10^{-3})^{2}\) to 4 significant figures

Assessment: JAMB UTME - Mathematics - 2021 Subject: General Mathematics

Question 1 Report

0.0014

0.001448

0.0022

0.002172

Answer Details

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

(3 x 10-

^{3}

)

^{2}

............(B)

= 3

^{2}

x

^{2}

=

\frac{1}{10^{3}}

x

\frac{1}{10^{3}}

(Note that x

^{2}

=

\frac{1}{x^{3}}

)

= 24.34 x 3

^{2}

x

\frac{1}{10^{6}}

=

\frac{2172.06}{10^{6}}

= 0.00217206

= 0.002172(4 s.f)

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