Film area = half of cylinder side area+bottom circle area.
=( 1/2)*2*3. 14*2.5*20+3. 14*2.5*2.5
=3. 14*(50+6.25)
= 176.625 m2
The space in the greenhouse is half the volume of the cylinder;
(1/2) * 3.14 * 2.5 * 2.5 * 20 =196.25m3.
Composition 6 is entitled "My troubles"
Everyone will have troubles, and there will always be unhappy things.
Me too.
There is a math exam this day, an