Step-by-step explanation:
A=2πrh+2πr2 ans for 1 one
Answer:
Step-by-step explanation:

Answer for #1
Let the old price be
$
x
per liter. 10 liters would have cost a total of
$
10
x
.
The new price is
$
(
x
+
0.20
)
per liter. 10 liters would have cost
$
10
(
x
+
0.20
)
.
The total cost is
$
9.20
. So,
10
x
+
10
(
x
+
0.20
)
=
9.20
10
x
+
10
x
=
9.20
−
2
x
=
7.20
20
x
=
0.36
Thus, the old price was
$
0.36
per liter.
Answer:
<h2>There are 22% of chances that the next vehicle in the lot is a red car.</h2>
Step-by-step explanation:
The event is a red car vehicle. So, the experimental probability would be the ratio between the total number of red car vehicles and the total number of cars.
Notice that there are 22 red vehicles in total, and there are 100 cars in total. So, the ratio is

Therefore, there are 22% of chances that the next vehicle in the lot is a red car.