Angle 4 is 108 because it is vertical to angle 2 so they are equal, angle 1 is 72 because it is a straight angle to angle 4 (or 2) which means when the angles are added together, they equal 180, and then angle 3 would also be 72 because it is also a straight angle with angle 4 (or 2) for the same reason (you could also say angle 3 is a vertical to angle 1 and that’s why they are equal)
V=hpir²
1/2 full
Vcylinderthisone=(1/2)hpir^2
given
h=250
r=100
so
V=(1/2)(250)pi(100)²
V=125pi10000
V=1250000pi
aprox pi=3.141592
V=3926990 cm^3
divide by 1000
3926.99 liters
about 3927 liters
216 pi m3
You do the radius times itself (24) times the height (9•24) you get (216)
Basically the question is asking YOU when you hear “system of equations” what do you think about it - what do you already know about system of equations. Basically. Btw enjoy this picture.
