The mean distance of the Earth from the Sun is considered as radius :

$\"\"$ miles.

$\"\"$ revolution takes $\"\"$ days.

Time $\"\"$ day

$\"\"$ hours

$\"\"$ hours.

The linear distance traveled by the Earth is calculated by $\"\"$ .

Since we are assuming that the orbit of the Earth around the Sun is circular, distance for $\"\"$ revolution is $\"\"$ .

Substitute $\"\"$ mile.

$\"\"$

$\"\"$ miles.

The linear speed of the Earth is calculated by using the formula $\"\"$ .

Substitute $\"\"$ hours and $\"\"$ miles.

$\"\"$

$\"\"$ miles/hour.

The linear speed of the Earth is $\"\"$ miles/hour.