Question

The Earth's circumference measured at the equator is approximately 1.3148 × 108 feet. What is the number written in standard form?

Answer 1

The number written in standard form is
`131,480,000`

Explanation:

we have

`1.3148*10^8`

we know that

`10^8=100,000,000`

substitute

`1.3148*10^8=1.3148(100,000,000)`

Remember that

When multiplying decimals by 10, move the decimal point one space to the right

In this case move the decimal point eight spaces to the right

`1.3148(100,000,000)=131,480,000`

therefore

The number written in standard form is
`131,480,000`