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Morgarella [4.7K]
2 years ago
7

Surface area of cylinder

Mathematics
1 answer:
Vlad1618 [11]2 years ago
3 0

Answer:

75.40 cm²

Step-by-step explanation:

SA = 2πrh + 2πr²

SA = 2π(2)(4) + 2π(2)²

SA = 50.27 + 25.13

SA = 75.40 cm²

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What’s the answer to (16-x)2?
Oxana [17]

Answer:

-x + 18

Step-by-step explanation:

just add 16 and 2. this is the furthest it can be simplified

6 0
3 years ago
The diameter of a spherical balloon that is being filled with air is increasing at the rate of 3 inches more than the time, t. W
Harrizon [31]

Answer:

V=36 \pi cubic inches

Step-by-step explanation:

Diameter is increasing at 3 inches more than time, When t = 3

Diameter (d) = 3+3 = 6

d = 6

Radius is HALF of diameter, so

r = 6/2 = 3

Now, the volume of a sphere is given by the formula:

V=\frac{4}{3}\pi r^3

Putting r = 3, we get:

V=\frac{4}{3}\pi r^3\\V=\frac{4}{3}\pi (3)^3\\V=36 \pi

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5 0
2 years ago
There is a 10% sales tax on a purchase of $13.50 how much is the tax
raketka [301]

Answer:

1.35

Step-by-step explanation:

13.5/100 times 10 = 1.35

8 0
3 years ago
Read 2 more answers
I need help with these 2
Slav-nsk [51]

Answer:

Step-by-step explanation: Hey for the second one I got y = -3/4x -0.5 I'm not sure if its correct though sorry if not
ill try my best to explain my solution though
1. From the parallel equation (3x + 4y = 12) all we need to do is find the slope

So the easiest way to do so is to put the said equation in <u>y-intercept </u>form

y=mx +b
m= slope

b= y intercept

so 1. 3x + 4y = 12

=

4y = 12-3x

divide that by 4 to get only y

y=3-3/4x

-3/4 is our slope

y=-3/4x+b

than we have a point -2, -2

if we put -2 for y

-2=-3/4x+b

and then we put our -2 for x
-2 = -3/4 * -2 + b

=

-2  = -1.5 +b
b=-0.5

Answer : y=-3/4x-0.5

4 0
1 year ago
luna had 50 when she got to the carnival. after riding 12 rides, she had 26 left. what was the price of each ride
KonstantinChe [14]

Answer:

2 for each ride

Step-by-step explanation:

50-26=24 she used 24 so far

24/12=2 each ride was 2

8 0
3 years ago
Read 2 more answers
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