I have a problem with a square, length 8 meters, and a circle, diameter 4 meters. It wants me to subtract the square's area minus the circle's area, but I keep getting a negative number! The answer should be 13.76 and I have to show my work. Help?

Question

asnaseer · Answer

Please show your work so that I can help spot where you may have made a mistake

anonymous · Answer

I got 32 meters squared for the square, then 50.24 meters squared for the circle. Then when I subtract them I got - 18.24 meters squared.

jj123.3 · Answer

you got one of your numbers try works with the answer to get the numbers then subtract the numbers to check your work on getting 13.76

anonymous · Answer

It just looks like both of the areas are correct

asnaseer · Answer

how did you get 32 for the area of the square?

anonymous · Answer

well if the length is 8, then 8 + 8+ 8+ 8= 32, right?

asnaseer · Answer

No - what you have calculated is the perimeter of the square (i.e. the distance all the way around the square).

The area of a square is equal to its sides length multiplied by its side length (i.e. the square of its side length)

asnaseer · Answer

Similarly - how did you calculate the area of the circle?

anonymous · Answer

|dw:1417633054790:dw| the difference between the areas, 13. 76 M2, is supposed to represent the scribbled area