Question

Answer plz urgent...





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Answer 1

Step-by-step explanation:

area off one wall=30m^2

breath of the wall=4m

area of floor=30m^2

Answer 2

Answer:

Step-by-step explanation:

Area of four walls that is the lateral surface area of a cuboid-2h(l+b)

So 2h(l+b)=120m square

height given is 4m

So, 2×4(l+b)=120m square

A/Q,

        Length is twice the breadth,

         Let the breadth be x metre

          So length=2x

Now, 2×4(2x+x)=120

          8(2x+x)=120

           16x+8x=120

            24x=120

              X=5metre (that is breadth)

So length is 10metre

   So area of the floor is 5×10=50m square...