Answer:
Option A. Perimeter = 15.71 feet
Step-by-step explanation:
A Norman window is rectangular on three sides with semicircular top.
We have to find the perimeter of the window.
Perimeter of Norman window = perimeter of semicircular top + perimeter of rectangle at the bottom
Perimeter of semicircular top = [tex]\frac{2\pi r}{2}=\pi r[/tex]
= [tex](\pi)(\frac{3}{2})=(3.14)(1.5)[/tex]
= 4.71 feet
Perimeter of the rectangular base = (Length) + 2(width)
= 3 + (2×4) = 3 + 8
= 11 feet
Total perimeter = 4.71 + 11 = 15.71 feet
Answer is Option A.15.71 feet will be the perimeter.
