The triangular sign has a base of 44cm and a height of 40cm.
Use these values in the formula for the area of a triangle.
[tex]A = \frac{1}2bh=\frac{1}2\times44\times40=880[/tex]
Thus one side of the sign is 880 cm².
Since both sides of the sign must be painted, you must paint 880×2 = 1760 cm² for an entire sign.
How many signs would 44,000 cm² be?
44,000 ÷ 1760 = 25 signs.
Thus one litre of paint covers 25 signs.
