Question

A rectangular solid measures 1.0m by 5.6cm by 2.1mm express its volume in cubic meters

Answer 1

Answer : The volume of of rectangle is, $0.0001176m^3$

Explanation : Given,

Length of rectangular solid = 1.0 m

Width of rectangular solid  = 5.6 cm = 0.056 m

conversion used : (1 cm = 0.01 m)

Height of rectangular solid = 2.1 mm = 0.0021 m

conversion used : (1 mm = 0.001 m)

Formula for volume of rectangle :

$V=l\times b\times h$

where,

V = volume of rectangular solid

l = length of rectangular solid

b = width of rectangular solid

h = height of rectangular solid

Now put all the given values in the above formula, we get:

$V=(1.0m)\times (0.056m)\times (0.0021m)$

$V=0.0001176m^3$

Therefore, the volume of of rectangle is, $0.0001176m^3$

Answer 2

First, make sure all three measurements have the same unit (I recommend meters because that's what the question calls for)

1.0m=1.0m
5.6cm=0.056m
2.1mm=0.0021m


Then, you just want to multiply the three together to get the total volume.
1.0X0.056X0.0021=0.0001176 or 0.00012, if your teacher wants you to use proper sig figs