A granite block in the shape of a right rectangular
prism has dimensions 30 centimeters by
40 centimeters by 50 centimeters. The block has a
density of 2.8 grams per cubic centimeter. What is
the mass of the block, in grams? (Density is mass
per unit volume.)

Step-by-step explanation:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles