Answer:
To the nearest hundredth : 628.32 
To the nearest whole number : 628
Step-by-step explanation:
The formula for the area of a circle is : 
To work out the area you would first need to work out the radius. You can do this by dividing the diameter of 40 cm by 2, this gives you 20 cm. This is because the radius is half of the diameter.
Now that we have worked out the radius, the next step would be to work out the area. You can do this by multiplying pi by the radius of 20 squared, this gives you 1256.64.
The final step is to work out the area of this semi-circle. You can do this by dividing the area of 1256.64 by 2, this gives you 628.32
. This is because a semi-circle is half of a circle.
1) Divide 40 by 2.

2) Multiply pi by 20 squared.

3) Divide 1256.64 by 2.

Hey!
Your answer would be 4!
3*4+2=14
Hope this helped! Make sure to check my calculations before submit!
Godspeed
-Song
Answer:
D,E
Step-by-step explanation:
I chose D and E because a square has 4 equal sides, so I looked for answer choices with 4x and since it is (x+8) I also looked for answers with that multiplied by 4, and 32 since 8 times 4 is 32. Hope this helped! if you are confused just comment on this and I will gladly help!
A+S=589
S=a-61
A+A-61=589
2a=589+61
2a=650
A=325
S=325-61
S=264
Hope this helps
Answer:
30 degrees but I have to write more stuff so brainly will let me submit my answer