Answer:
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
