Question 38687
From the rectangle you can find the diameter of the circle by dividing the rectangle in half.
THis leaves you with a right triangle:
{{{5^2+8^2=c^2}}}
{{{89=c^2}}}
c=9.4 (rounded)
The diameter of the circle is 9.4
Circumference = {{{pi*d}}}
={{{9.4*pi}}}
=29.6
Hence, the circumference is 29.6.
Area = {{{pi*r^2}}}
r=4.7
={{{pi*4.7^2}}}
=69.9
Hence, the area is 69.9
Region not covered by the triangle = area of the circle - area of the rectangle .
Area for the rectangle: 5*8=40
 = 69.9-40
=29.9
Hence, the area not covered by the triangle is 29.9
Paul.