1) convert the distance from kilometers into miles.
2) determine a similar distance (in miles) that is meaningful for you. (for example, if a layer was 500km thick, that would be approximately 300 miles, which is the distance from my house to new york city)
lower mantle ~ 2230 km

1384.83 miles .

Explanation:

1 .

Conversion of kilometer to mile ,

1 kilometer is equal to 0.621 mile ,

The lower mantle is 2230 km can be converted to miles , by simply multiplying by the value 0.621 .

Hence ,

the conversion is done as follows ,

2 .

Lower mantle = 2230 km = 2230 * 0.621 = 1384.83 miles

hence , the value of lower mantle is 2230 km and in terms of mile is equal to 1384.83 miles .