The school is selling pennants. each pennant is cut in the shape of a triangle 4 feet long and 1 foot high. how many square feet of fabric is needed to make 150 pennants?
a. 600 ft2
b. 150 ft2
c. 300 ft2
d. 750 ft2

The fabric is needed 300 ft² to make 150 pennants ⇒ answer C

Step-by-step explanation:

* lets explain how to solve the problem

- The area of any triangle is 1/2 × b × h , where b is the base of

 the triangle and h its height

- Each pennant is cut in the shape of a triangle

- The triangle is 4 feet long and 1 foot high

- They need to make 150 pennant

∵ The base of the triangle = 4 feet

∵ The height of the triangle = 1 foot

∵ The area of the triangle = 1/2 × b × h

∴ The area of the triangle = 1/2 × 4 × 1 = 2 feet²

∵ The number of pennants = 150

∵ The area of each pennant = 2

- To find the area they need to make 150 pennants multiply the

  area of one pennant by the numbers of pennants

∴ The total area = 150 × 2 = 300 feet²

* The fabric is needed 300 ft² to make 150 pennants

answer: 12,000

step-by-step explanation: first you ar e supposed to add. then multiply then subtract