Answer:
Volume of the cylinder is 75.43
Step-by-step explanation:
Volume of Cylinder is 
where r is base radius = 2 and h is the height = 6
(22/7) × 2² × 6
= (22/7) × 4 × 6
= (22/7) × 24
= 528/7
= 75.43
The irrational in between should be 7.8
Angle a = 60
given that all angles of a triangle added together must equal 180
x = -20
-20+80=60
do it again for the other angle measurement
60+60+40=180
therefore, angle A is 60°
Answer:
52min
Step-by-step explanation:
5 people..............5 walls............52 min
1 people...............5 walls...........52 x 5=260 min
1 people................20 walls.........260 x 4 =1040 min
20 people................20 walls........1040:20=52 min
Let's plug x= -1, y= 4 in the inequation, we have:
4< 2*(-1)+5
⇒ 4< -2+5
⇒ 4< 3 (false)
Therefore, (-1,4) is not a solution of the inequation y<2x+5~
