The radius of a circle is 40ft. Which is true statement ability the circumference(c)?
A. 40ft. B. 160ft. C.80ft. D. 240ft.

C =251.2 ft

Step-by-step explanation:

To find the circumference we use

C = 2 * pi *r

C = 2 *pi * 40

C = 80 pi

C = 80 *3.14

C =251.2

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

answer: it is 8

step-by-step explanation:

you know why its 8