Round to the nearest tenth

Radius of the circle is =

Step-by-step explanation:

Circumference of a circle is the measure of the length of its boundary that can be measured by:

Circumference of the circle=

For,

As,

Putting the values in the formula:

The radius of the circle is :

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