The total surface area of the cuboid can be calculated by adding the area of all six sides.
2(lw + lh + wh)
2(20x3 + 20x10 + 3x10)
2(60 + 200 + 30)
2(290)
580
Therefore, the surface area of one cuboid is 580 cm².
To find how many cuboids Finnley can completely cover with 46,400 cm² of paint, we need to divide the total surface area of the cuboid by the surface area of one cuboid.
46,400 / 580 = 80
Therefore, Finnley could completely cover 80 cuboids like the one shown with the tin of orange paint.
~~~Harsha~~~