Answer :
Answer: 19.6ft²
Step-by-step explanation:
Formula for finding the area of a circle = πr² where π = 3.142 or 22/7 and
r = 5/2 because two radii make one diameter.
Therefore the area of the circular stained glass = 3.142 x 5/2 x 5/2
= 3.142 x 25/4
= 19.638
≅ 19.6ft²