Find the exact circumference of a circle with the given radius. 7 feet c = 7 ft. 14 ft. 27 ft.

r = 7 feet

C = 2 π r = 14 π

14π feet

Not apparently among the choices.

Step-by-step explanation:

We know that the circumference of a circle is given by :-

, where r is the radius of the circle.

Given: The radius of a circle = 7 feet

Then, the circumference of the circle will be:

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2