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2 years ago

Need an answer fast, solve for X will mark brainliest

Mathematics

1 answer:

Rufina [12.5K]2 years ago

5 0

x=18√5 or 40.25m

Step-by-step explanation:

by using Pythagoras law

h²=p²+b²

x²=36²+18²

x=√1620=18√5 or 40.25m

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Find the Total surface area of a cone if it's slant height is 21m and diameter of it's base is 24m.

kherson [118]

<h3><u>Answer :- </u></h3>

The total surfAce area of cone is <u>1244.57m².</u>

<h3><u>Step-by-step</u><u> </u><u>explanation</u><u> </u><u>:</u><u>-</u><u> </u></h3>

The total surface area of cone..

<h3><u>Solution :- </u></h3>

Given that ,

The slant height of the cone = 21m.
Diameter of it's base = 24m.

<h3><u>♦</u><u> </u><u>Radius is </u></h3>

<u>=</u>> Diameter / 2

=> 24 / 2

=> 12m

<u>Total surface area of cone = πr ( r + L ) .</u>

<h3><u>Where</u><u> </u><u>we </u><u>know</u><u>,</u></h3>

π = 22/7
r = Radius ( radii )..
L = Slant height.

<h3>According to the question :- </h3>

The total surface of cone is,

<u>=> Total surface area = πr { r + L } ..</u>

$= \frac{22}{7} \times 12 \times (12 + 21)$

$= \frac{22}{7} \times 12 \times 33$

$= (22 \times 12 \times 33) \div 7$

$= (726 \times 12) \div 7$

$= 8712 \div 7$

$= 1244.57 {m}^{2}$

• Therefore , The total surface area of cone is <u>1244.57m².</u>

Hope this helps you :)

8 0

1 year ago

Read 2 more answers

How do you do it can you guys help me please

Usimov [2.4K]

To answer 13 you have to convert the numbers there are 8 pints in a gallon so 64/8=8 so there are 8 gallons
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7 0

2 years ago

Find the domain for the function f(x)=sqrt x^2-x+6

dybincka [34]

Answer:

The domain is {x : x ∈ R} or (-∞ , ∞)

Step-by-step explanation:

* Lets explain how to find the domain

- The domain of the function is the values of x which make the

function defined

- The quantity under the square root must be ≥ 0 because there is

no square root for negative value

* Lets solve the problem

∵ f(x) = √(x² - x + 6)

∴ The value of (x² - x + 6) must be greater than or equal zero because

there is no square root for negative value

- Graph the function to know which values of x make the quantity

under the root is negative that means the values of x which make

the graph under the x-axis

∵ The graph doesn't intersect the x-axis at any point

∵ All the graph is above the x-axis

∴ There is no value of x make f(x) < 0

∴ x can be any real number

∴ The domain of f(x) is all real numbers

∴ The domain is {x : x ∈ R} or (-∞ , ∞)

6 0

2 years ago

The volumes of two similar solids have an 125 : 216 ratio. What is the ratio of their side lengths

Lubov Fominskaja [6]

Answer:

5:6

Step-by-step explanation:

To find the ratio of side lengths you need to cube root of the ratio of the volumes. The reason you use the cube root is because you are multiplying 3 things together when you find volume.

$\sqrt[3]{\frac{125}{216} } =\frac{5}{6}$

5 : 6

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1 year ago

You had $20 to spend on eight pens. After

Arisa [49]

Answer:

I think its 5.

Step-by-step explanation:

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2 years ago