圆柱形的英文题

to get the area of the top, we need to get the circumstance of the circle, so, we do:

10/8 which gives us 1.25 which is the circumstance of the circle at the top of the cylinder(circumstance of top).
This allows us to calculate the area of the top, we do:
1.25/pie then divide by 2 which equals 0.198943....that is the radius of the area top。
Now, use the radius to find the area of the circle:
0.198943.... square x pie=0.12433....
which then round up to 2 d.p is 0.12

（本人认为这道题在文字表达出得有些问题，所以如果任何回答有错误，请多包涵。如果提问者需要中文解释的话，可以到BaiduHi上来找我或者，在下面的帖子上回答。谢谢）