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3 years ago

Please help find surface area!!

Mathematics

1 answer:

NeTakaya3 years ago

3 0

Answer:

138 cm.

Step-by-step explanation:

So first, we find the S.A. of the front and back.

The diagram says the side length of the front is 3 cm. and 3 cm.

3x3=9. So then, the back is also 9 cm, 9+9=18.

Now to find the S.A.'s of the four sides, you have to see the side lengths of each of them. The side lengths are 3 and 10.

3x10=30. This means each of them is 30 cm.

30x4=120. 120 is the total surface area of the four sides.

To find the total surface area of the whole rectangle, you add all the surface areas.

120+18=138 cm. (Not squared, since it's surface area and not area.)

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What is the volume of cylinder B?

timama [110]

Step-by-step explanation:

Height of the cylinder A(h1)=5cm

CSA of cylinder A(CSA1)=18cm^2

Height of the cylinder B (h2)=10cm

CSA of cylinder B (CSA)=?

Since cylinder A and B are similar,

h1=xh2

or,5cm=x*10cm

or,x=1/2

Similarly,

CSA1=xCSA2

or,18cm^2=1/2*CSA2

or,CSA2=36cm^2

We khow that,

Volume of cylinder B (V2)= CSA2 * h2

=36cm^2*10cm

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3 years ago

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Bad White [126]

12% is the percent decrease

95,920 is 88% of 109,000.
x/100 = 95,920/109,000

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9,592,000 / 109,000 = 88

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Since it is 88% of it, it decreased by 12%

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3 years ago

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Let h(x)=(g o f)(x)=√x+3 <br> Which of the following could be a possible decomposition of h(x)?

hodyreva [135]

In this case, h(x) = sqrt(x) + 3

A. f(x)=x+3; g(x)=√x
B. f(x)=x; g(x)=x+3
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Again, you need to find a function f(x) that once evaluated in g(x) gives us h(x)

h(x) = g(f(x))

Looking at the options, the answer is C.

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4 years ago

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erastova [34]

Answer:

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Step-by-step explanation:

For each dice, there are only two possible outcomes. Either a failure is obtained, or a success is obtained. Trials are independent, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$