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3 years ago

What is the total surface area of a cylindrical tank having

Mathematics

1 answer:

UkoKoshka [18]3 years ago

8 0

Answer:

Could be C) or D) None of these, 29688.05cm^2

Step-by-step explanation:

Did the question to round off to any numbers?

Formula for cylinder's T.S.A: 2 π r h + 2 π r^2

Diameter= 2 x radius

Radius = 70cm / 2 = 35cm

Height -> need to convert m to cm -> 100cm

Substitute these values into the formula:

2 x π x 35 x 100 + 2 x π x (35)^2 = 29688.05cm^2

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The momentum of an object, p, is determined by its mass, m, and its velocity, v. The formula for this relationship is shown.

timama [110]

Answer:

Step-by-step explanation:

7 0

3 years ago

Tan^2x+sec^2x=1 for all values of x. <br> true or false?

amid [387]

This is not true.

$\tan^2x+\sec^2x=\dfrac{\sin^2x}{\cos^2x}+\dfrac1{\cos^2x}=\dfrac{1-\cos^2x+1}{\cos^2x}=2\sec^2x-1$

$2\sec^2x-1=1\implies\sec^2x=1\implies\sec x=\pm1\implies x=n\pi$

where is $n$ is any integer. So suppose we pick some value of $x$ other than these, say $x=\dfrac\pi4$ . Then

$\tan^2\dfrac\pi4+\sec^2\dfrac\pi4=1+2=3\neq1$

5 0

3 years ago

Read 2 more answers

55g as a percentage of 2.2kg

Evgesh-ka [11]

Answer:

2.5%

2.2kg=2200g

<u> $\frac{x}{100} \times 2200 = 55 \\ 22x = 55 \\ x = 2.5\%$ </u>

3 0

3 years ago

Find the equation of a line through the coordinate (3,−2) and parallel to the line represented y=12x−2. A y=12x−2 B y=−2x+4 C y=

Hatshy [7]

Answer:

Step-by-step explanation:

y=12x−2. parallel lines have the same slope 12

find b at point (3,-2)

y=12x+b

-2=12(3)+b

-2-36=b

b=-36

the equation has to be y=12x-38

when you input the point(3,-2)

-2=12(3)-38

-2=-2 correct

7 0

3 years ago

A group of friends went to the movies. They shared 2 bags of popcorn equally. If each person got 2/3 of a bag of popcorn, how ma

Gemiola [76]

Answer:

There would have been three people in the group.

Step-by-step explanation:

This is because if you add 2/3 together until you get that amount, it will add up to having three people. If this sounds confusing, here is a visual thing to help.

2/3+2/3=4/3 which can also equal 1 1/3

1 1/3 + 2/3 =2

you added 2/3 together three times to get two, so three is the answer.

Hope this helps!

4 0

3 years ago