Answer:
48.3 cm²
Step-by-step explanation:
The area (A) of the yellow region = area of square - area of quarter circle, that is
A = 15² - ([tex]\frac{1}{4}[/tex] πr² )
= 225 -( [tex]\frac{1}{4}[/tex] × π × 15² )
= 225 - 176.71 ≈ 48.3
