Answer:
120 yd²
Explanation:
The floor consists of a square and a triangle
area of square = 10² = 100 yd²
area of triangle =
bh ( b is the base and h the height )
Here b = 4 and h = 10 , then
area =
× 4 × 10 = 2 × 10 = 20 yd²
company needs 100 + 20 = 120 yd²