In a society roads and buildings are created. Find the total area covered by roads and buildings. Find the cost of building roads if it costs 3000 per m²

Question

In a society roads and buildings are created. Find the total area covered by roads and buildings. Find the cost of building roads if it costs 3000 per m² ​

lavnotlez · Answer

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Florisalreadytaken · Answer

I am not sure what currency that is so we will be using $ okay.

we are given this rectangle which supposedly represents an area made of 5 same roads and 4 other rectangles which one would assume they're equal but we don't have any information about that.

It's asking you to find the total area so that would be:

$  A_t  = 30   m \times 50 m $
$  A_t  = (30 \times 50)m^2 $
$  \boxed{A_t  = 1500 \ m^2 }$

The second question wants you to find the cost of building roads which I am not sure whether they mean one road or all $5$ of them?

this is the solution for one road:

$ A_{R} =3   m \times 30 m  $

$ A_{R} =   (3 \times 30)m^2 $

$ \boxed{A_{R} =  90 m^2 }$
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this is the solution for $5$ roads:

$ A_{5R} =5\left(3   m \times 30 m \right) $

$ A_{5R} =5\left[   (3 \times 30)m^2   \right] $

$ A_{5R} =5 \times 90m^2   $

$ \boxed{A_{5R} = 450 m^2 }$

Florisalreadytaken · Answer

Now, can you find the price having the areas?

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