Question

In each of the following express in standard form

The earth has $13530000000$cubic km of sea water.

Answer 1

Given number :The earth has $13530000000$cubic km of sea water.

A number in standard form is written as $\mathrm{a}\times {10}^{\mathrm{k}}$, where a is a terminating decimal such that $1\le \mathrm{a}<10$ and $\mathrm{k}$ is any integer.

Now,

$$\begin{gathered} 13530000000=13530000000\times \frac{{10}^{10}}{{10}^{10}} \\ =1.353\times {10}^{10} \end{gathered}$$

Hence, the earth has $1.353\times {10}^{10}$ cubic km of sea water in standard form.