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3 years ago

i’ll give a brainliest please just help !!!!!

Mathematics

1 answer:

nignag [31]3 years ago

4 0

Answer:

which numbers do you need to know

Step-by-step explanation:

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Round your answer to the nearest tenth if necessary. Use 3.14 for .

harina [27]

Answer:

$\boxed{\rm \: Volume_{(Drum)} = 5024 \: in {}^{3} }$

Step-by-step explanation:

Given :

Diameter of a drum = 20 inches
Deep ( height ) of the drum = 16 inches
π = 3.14

To Find:

The volume of the drum.

Solution:

We all know that drum is cylindrical.So we'll use the formulae of the volume of cylinder,to find its volume.

$\boxed{\rm \: Volume_{(Cylinder)} = \pi{r} {}^{2} h}$

Where,

r = radius
h = height (deep)
π = 3.14

The value of radius ain't given,but the diameter is given.We can use the formulae of radius.

$\rm \: Radius = D/2$

D = diameter

Substitute the value of diameter:

$\rm \: Radius = \cfrac{20}{2} = 10$

Hence,the radius is 10.

So we could now use the formulae of the volume of cylinder:

$\rm \: Volume_{(Cylinder)} = \pi{r} {}^{2} h$

π = 3.14
r =10 in
h = 16 in

<em>[Firstly bring the answer in terms of π then plug π = 3.14 and then simplify.]</em>

$\rm \: Volume_{(Drum)} = \pi(10) {}^{2} (16)$

$\rm \: Volume_{(Drum)} =\pi100(16)$

$\rm \: Volume_{(Drum)} = 1600\pi$

$\rm \: Volume_{(Drum)} = 1600 \times 3.14$

$\boxed{\rm \: Volume_{(Cylinder)} = 5024 \: in {}^{3}}$

<u>Hence, we can conclude that:</u>

The volume of this drum is 5024 in^3.

8 0

2 years ago

Place parentheses in each equation order of operations

Dima020 [189]

What equation? There’s none there

4 0

3 years ago

Which mathematical expression is equivalent to the number sentence below

alexandr1967 [171]

Solution :

It says multiply 8 by 12 and then add 9

reading the sentence it is clear that priority is given to multiplication of 8 and 12 , once it is done then we would add 9 .

Let us first write multiplying 8 and 12 which makes it 8 x 12

the result is being add to 12 so we place 8x12 in parenthesis then add 12

which , makes it : ( 8x12) + 9

this matches to now of the given options so it is because multiplication is always given a priority comparing to addition so here parenthesis is not that important .

we can write it without parenthesis like : 8x12 +9

Answer is third option .

3 0

4 years ago

Read 2 more answers

Find the value of x.

Marta_Voda [28]

D i think because it’s talking about the angling

7 0

3 years ago

Read 2 more answers

0.84 is 10 times as much as 8.4 and 1/10 of what ? Please help

lorasvet [3.4K]

8.4 should be your answer

6 0

3 years ago

￼i’ll give a brainliest please just help !!!!!

i’ll give a brainliest please just help !!!!!