## anonymous one year ago A rectangle is placed around a semicircle as shown below. The width of the rectangle is 4mm. Find the area of the shaded region. Use 3.14 and do not round your answer.

1. anonymous

2. Vocaloid

|dw:1433049490812:dw| area of shaded region = area of rectangle - area of semicircle

3. Vocaloid

we know that the length of the rectangle is 4 + 4, because the radius of the circle is 4, and the bottom of the rectangle is twice the length of the radius

4. anonymous

so is it going to be 4^2? then since the bottom of the rectangle is twice the length of the radius?

5. anonymous

area of rectangle=8*4=? area of semi circle$=\frac{ \pi r^2 }{ 2 }=\frac{ 3.14*4*4 }{ 2 }=3.14*8=?$ subtract and get the result.

6. anonymous

25.12?

7. anonymous

@surjithayer

8. anonymous

32-25.12=?