Answer:40 square yards
Step-by-step explanation:
Given
Floor area A=10 square yards
Red tile costs 
per square yards
White tile costs 
per square yards
Total money spent=
on tiles
Suppose red tiles cover an area of 
square yards
So, we can write
Red tiles cover an area of 40 square yards
1. Which polygon or polygons are regular?
A regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length).
Therefore your answer is:
A. equilateral triangle
C. square
2. Which polygon is always irregular?
traingle - NOT (equilateral triangle)
trapezoid - YES
square - NOT
hexagon - NOT (regular hexagon)
My explanation is attached below.
There is an app called math-way it helps you with these types of questions
