Question

use the metric prefixes table to answer the following questions. 4. the radius of the earth is 6378 km. what is the diameter of the earth in meters? 5. in an experiment, you find the mass of a cart to be 250
metric prefixes: giga = 1 000 000 000 billion mega = 1 000 000 million kilo = 1 000 thousand centi = 1/100 hundredth milli = 1/1000 thousandth micro = 1/1 000 000 millionth nano = 1/1 000 000 000 billionth

Explanation:

Step1: Recall diameter - radius relation

$d = 2r$ (where $d$ is diameter and $r$ is radius)

Step2: Convert radius from km to m

Given $r = 6378$ km. Since 1 km = 1000 m, then $r=6378\times1000$ m.

Step3: Calculate the diameter

$d = 2\times6378\times1000$ m = 12756000 m

Answer:

12756000 m