3 years ago

42. A cylinder has a base of 36 π in² and a volume of 432π in³. What is the surface area of the same cylinder? *

Mathematics

1 answer:

faust18 [17]3 years ago

8 0

Answer:

216π in²

Step-by-step explanation:

Base area = π × r²

36 π = π × r²

r² = 36

r = 6

Volume = base area × height

432 π = 36 π × height

height = 12

Surface area:

2 × π × r × (r + h)

2π × 6 × (6 + 12)

216π

You might be interested in

Is d = 25 a solution to the inequality below?<br><br> d/5 > 28

kondor19780726 [428]

25/5 would be 5

and in the inequality, it says the d/5 is greater than 28

d=25 is nor a solution to the in equality

7 0

3 years ago

2. If ¡2x+3 = i, where i = V-1, then which of the

Alexus [3.1K]

I assume you mean the equation

$i^{2x+3} = i$

Since i = √(-1), we have i⁴ = 1 and so i⁵ = i. Then 2x + 3 must be some multiple of 5.

Now just check for which of the given choices that this holds:

x = 16 ⇒ 2x + 3 = 35 (yes)

x = 11 ⇒ 2x + 3 = 25 (yes)

x = 10 ⇒ 2x + 3 = 23 (no)

x = 14 ⇒ 2x + 3 = 31 (no)

6 0

2 years ago

Select all the statements that are correct rational approximation of irrational numbers?

eimsori [14]

The answers would most likely be A,C,and B from my calculations

6 0

3 years ago

Solve<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2%20%5Ctimes%202%282%20%5Ctimes%204%29%7D%7B8%7D%20" id="TexFormula1" ti

creativ13 [48]

The answer is three you have to times the top numbers and divide

8 0

2 years ago

Read 2 more answers

The music for Nadia’s dance routine last for exactly 4 minutes. When Nadia dances her routine, she starts with her music and fin

natima [27]

4 x 60 = 240 seconds

$\frac{12}{60} / \frac{12}{12} = \frac{1}{5}$ of a minute not dancing.

$4 \times 5 = 20 - 1 = 19$ $\frac{19}{20} \times \frac{5}{5} = \frac{95}{100}$

95% of the time dancing

4 0

3 years ago

Read 2 more answers