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4 years ago

What is the total surface area of the following cylinder?

Mathematics

2 answers:

Crank4 years ago

5 0

Answer:

The correct answer is opyion B,

$791.28cm^2\\$

Step-by-step explanation:

Surface area of cylinder

$= 2 \pi r h + 2 \pi r^2\\= 2 \pi (6 cm) (15 cm) + 2 \pi (6 cm)^2\\= 565.48 + 226.19\\= 791.28 cm^2$

nevsk [136]4 years ago

3 0

2pi(r)(h)+2pi(r^2)
2pi(6)(15)+2pi6^2
565.4866776+226.1946711

B. 791.28cm^2

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Which star has a similar surface temperature to our sun?

xenn [34]

Answer: I believe it is yellow star?

Step-by-step explanation:

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3 years ago

Read 2 more answers

a mans age is three years less than four times his age of his oldest daughter. let a represent the daughters age. write an expre

iogann1982 [59]

Let's label the man's age "x" because it's the unknown value that we're trying to find. Remember that the daughter's age is represented y "a."

x = 4a-3 would be an expression to represent the man's age :)

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3 years ago

Suppose it takes 4 hours for a certain strain of bacteria to reproduce by dividing in half. If 70 bacteria are present to begin

Sauron [17]

Answer:

1 day: 4480

2 days: 8960

3 days: 13440

$f^{-1}(x) = \sqrt{\frac{x -4}{4}}$ ---- function inverse

Step-by-step explanation:

Given

$f(x) = 70 \cdot 64x$

Solving (a): The amount present after 1 day.

Here, $x =1$

So:

$f(1) = 70 \cdot 64*1= 4480$

Solving (b): The amount present after 2 days.

Here, $x =2$

So:

$f(2) = 70 \cdot 64*2= 8960$

Solving (c): The amount present after 3 days.

Here, $x = 3$

So:

$f(3) = 70 \cdot 64*2= 13440$

Solving (d): The inverse function of:

$f(x)= 4x^2 + 4$

Replace f(x) with y

$y= 4x^2 + 4$

Swap x and y

$x= 4y^2 + 4$

Rewrite as:

$4y^2 = x -4$

Divide by 4

$y^2 = \frac{x -4}{4}$

Take square roots

$y = \sqrt{\frac{x -4}{4}}$

Replace y with function inverse

$f^{-1}(x) = \sqrt{\frac{x -4}{4}}$

6 0

3 years ago

Enter the value of 6-\sqrt{19} to the nearest tenth

lana [24]

Answer: 1.6

Step-by-step explanation:

Calculator

4 0

2 years ago

The superhero flew for 3.5 hours and traveled 2,800 miles, At that rate, how far will he travel in 6 hours? (PLEASE SHOW STEPS!!

AysviL [449]

There are a couple ways to do this. The easiest is probably to set up a proportion.
(3.5/2800)=(6/x)
Cross multiply.
3.5x = 6(2800)
3.5x = 16800
Divide both sides by 3.5
X = 4800miles

5 0

3 years ago