Evaluate:
\[
\left(2.4 \times 10^{4}\right)\left(4.5 \times 10^{3}\right)
\]
A \( 1.08 \times 10^{7} \)
B \( 1.08 \times 10^{8} \)
C \( 1.08 \times 10^{12} \)
D \( 1.08 \times 10^{13} \)

Answer

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Answer

\( = 1.08 \times 10^{8} \)

Steps

Step 1 ：\( (2.4 \times 10^{4})(4.5 \times 10^{3}) = (2.4 \times 4.5) imes (10^{4} \times 10^{3}) \)

Step 2 ：\( = 10.8 \times 10^{7} \)

Step 3 ：\( = 1.08 \times 10^{8} \)