Question

Brian is making 5 triangular flags, each with the dimensions shown below. How much fabric will Brian need to make the 5 flags?

Answer 1

Answer:

c

Step-by-step explanation:

Answer 2

Answer:

  1,620 square inches

Step-by-step explanation:

The area of one triangle can be computed using the formula ...

  A = 1/2bh . . . . where b represents the base length, h represents height

  A = 1/2(18 in)(36 in) = 324 in²

Then the area of 5 flags will be 5 times that much:

  fabric needed = 5 × (324 in²) = 1,620 in²

Brian will need 1,620 square inches of fabric for his 5 triangular flags.