A sailboat has a mast that holds a triangular sail.The sail has a base of twelve meters and a height of nine meters. The cost of the sail is $15 per square meter. What will it cost to make the sail?
First since it is a triangle and it says meter square that means its an area so the area is 1/2hb h stands for height and b stands for base so a=1/2bh a=1/2(12)(9) a=1/2(108) a=54m^2
It says the cost of sail is $15 per square meter so $15*54 =$810
Why times by 54 because if 1 piece is $15 how about 54pcs? thats why we will multiply it
