Solve with due regard to significant figure.
`(3.0 xx10^(-8))+ (4.5 xx 10^(-6)) = `

Explanation

To solve the problem \( (3.0 \times 10^{-8}) + (4.5 \times 10^{-6}) \) while considering significant figures, we will follow these steps:

### Step 1: Convert the numbers to the same exponent
We need to express both numbers with the same power of ten. The larger exponent is \( -6 \), so we will convert \( 3.0 \times 10^{-8} \) to \( 10^{-6} \).

\[ 3.0 \times 10^{-8} = 3.0 \times 10^{-8} \times \frac{10^{2}}{10^{2}} = 0.030 \times 10^{-6} \]
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