Respuesta :
It would be 1,200 because you just have to multiply 400 times 3 hope it helped :)
Alright, lets get started.
A shelter house has a floor area of 400 square feet.
There are three identical shelter houses are built.
Area of 1 shelter house is = 400 square feet
Area of 3 shelter house is = [tex] 400*3 = 1200 [/tex] square feet
Hence combined floor area for three shelter house will be 1200 square feet. : Answer
Hope it will help :)