If nylon is $ 11 per square yard, how much would the fabric cost to make a triangular sail with a base of 15 feet and a height of 24 feet?
A) $220
B) $990
C) $440
D) $3,960
E) $1,980

Question

Quizplus · Accepted Answer

The area of a triangle is (1/2) * base * height. So, the area of the sail is (1/2) * 15 feet * 24 feet = 180 square feet. Since nylon costs $11 per square yard, and there are 9 square feet in a square yard, the cost of the fabric for the sail is 180 square feet / 9 square feet per square yard * $11 per square yard = $220.

If Nylon Is $ 11 Per Square Yard, How Much