The fashion designer needs 6.25 square ft of red silk t make the scarf option (C) 6.25 square ft is correct.
It is defined as a two-dimensional geometry that has four sides and four vertices. The sides of the square are equal in length. It is a regular quadrilateral.
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
As we can see in the picture,
The design has one large triangle and two congruent smaller triangles.
The area of the shaded portion:
= (1/2)[area of the square - an area of the large triangle]
= (1/2)[5×5 - (1/2)×5×5]
= (1/2)[25 - 12.5]
= (1/2)[12.5]
= 6.25 square ft
Thus, the fashion designer needs 6.25 square ft of red silk t make the scarf option (C) 6.25 square ft is correct.
Learn more about the square here:
https://brainly.com/question/14198272
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