Respuesta :

Hello!
The ratio from millimeters to meters is 1000:1
Therefore we can exchange the length and wide into 1.2 meters and 0.9 meters.
Rectangle area =ab
a=1.2
b=0.9
Rectangle area=1.08
Have a great day!

We have that for the Question "A rectangular board is 1200 millimeters long and 900 millimeters wide. What is the area of the board in square meters?" it can be said that the area of the board in square meters

a=1.08m^2

From the question we are told

A rectangular board is 1200 millimeters long and 900 millimeters wide. What is the area of the board in square meters?

Generally the equation for the Area  is mathematically given as

[tex]a=LXB\\\\a=1200*900[/tex]

[tex]a=1080000 millimeters^2[/tex]

a=1.08m^2

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