length X width area
LXW=A
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From the known length of the sides, length and width, to find the area you multiply(times) the length X width = Area. If you have a given area and wish to find the total area of an adjacent (next to) area, you add the areas. Area(1) + area(2) = Area (Total(.
Total surface area = (2*pi*radius2)+(diameter*pi*height)
A =Lw....A- areal - lengthw - width
To do this you would need to know the area of a brick and the area of the wall. Then you divide the area of the wall by the area of a brick. There are approximately 60 bricks per square metre.
Total surface area = (2*pi*r2)+(pi*r2) Area = 300*pi in square units