9514 1404 393
Answer:
9.6 square feet
Step-by-step explanation:
Maybe you want the quantity of glass in square feet. That will be found using the area formula ...
A = (π/4)d²
A = (3.14/4)(3.5²) = 9.61625 . . . . square feet
About 9.6 square feet of glass are needed to create the window.
