Anorman window is rectangular on three sides with a semi-circular top. you decide to install a norman window in your family room with the dimensions indicated in the diagram. what is its perimeter?

a.
15.71 feet
b.
14.23 feet
c.
18.45 feet
d.
14 feet

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 =

                                                 =

                                                 = 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.

probability for j is 1/4

while

a is 1/6