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nataly862011 [7]
3 years ago
9

ILL GIVE U LEGIT BRAINLIEST, A THANKS AND 5 STARS ONLY IF ITS THE CORRECT ANSWER.

Mathematics
2 answers:
Shtirlitz [24]3 years ago
5 0
Surface area of a cone is (pi×r×l) + (pi×r^2)
So (3.14×7×17)+(3.14×7^2)=527.52yd^2
MrRissso [65]3 years ago
4 0
The answer is:  "527.52 [square yards]".
______________________________________________________
Explanation:
______________________________________________________

Surface Area (S.A. of a cone) = π *r * (r + √(h² + r²) .

in which:  π = 3.14 (as instructed in the given problem; 

                r = radius = diameter / 2 = 14 yd / 2 = 7 yd.

(Note: diameter = 14 yd ; given in the figure shown) ;
                 
                h = perpendicular height = ??

Let us use the Pythagorean theorem to determine "h"
                                                              (the perpendicular height);
_________________________________________________________
 a² + b² = c² ; in which "c" in the hypotenuse; 

c = 17 yd. (the "slant length" of the cone; given in the figure;

Let: "b" = the radius, "r" = 7 yd; 

Solve for "a"; which is the "perpendicular height" ; or "h" ;

→ a² + b² = c² ;

→ a² = c² − b² ;

→ Plug in our known values for "c" and "b" ; to solve for "a" ;

→ a² = 17² − 7²  = 289 − 49 = 240 ;

→ a² = 240 ; 

Take the positive "square root" of each side of equation; to isolate "a" on one side of the equation" and to solve for "a" ; 

→√(a²) = √240 ;

→ a = 15.4919333848296675 ; = "h" ; perpendicular height; 
For now, we can simply refer to: "h" as equal to: "(√240)" ;
___________________________________________________
Now, given the formula for the surface area of a cone:
___________________________________________________
→ " Surface Area (S.A. of a cone) = π *r * (r + √(h² + r²) " ; 

Plug in our known values; and solve:

→Surface Area (S.A. of a cone) = 

      3.14 * (7 yd) * { 7 yd + √[(√240)² + (7 yd)²] } ;

            = 3.14 * (7 yd) * { 7 yd + √[(240 + (49 yd²] } ;

            = 3.14 * (7 yd) * { 7 yd + √289 yd²} ;

            = 3.14 * (7 yd) * ( 7 yd + 17 yd) ;

            = 3.14 * (7 yd) * (24 yd) 

            = 527.52 yd²  ; or write as: "527.52 square yards".
______________________________________________________
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I don’t really get this one.<br> Thx and have a great day!!
gayaneshka [121]

Answer:

The correct option is C). (9,4)

The coordinates of a point N is (9,4)

Step-by-step explanation:

Theory: If point P(x,y) lies on line segment AB and AP: PB=m:n, then we say P divides line AB internally in ratio of m:n and Point is given by

P=(\frac{mX2+nX1}{m+n} , \frac{mY2+nY1}{m+n})

Given that point, M is lying somewhere between point L and point N.

The coordinates of a point L is (-6,14)

The coordinates of a point M is (-3,12)

Also, LM: MN = 1:4

We can write as,

Let,

Point L(-6,14)=(X1, Y1)

Point M(-3,12)=(x,y)

Point N is (X2, Y2)

m=1 and n=4

M(-3,12)=(\frac{mX2+nX1}{m+n} , \frac{mY2+nY1}{m+n})

M(-3,12)=(\frac{1(X2)+4(-6)}{1+4} , \frac{(Y2)+4(14)}{1+4})

M(-3,12)=(\frac{(X2)-24}{5} , \frac{1(Y2)+56}{5})

(-3)=\frac{(X2)-24}{5}

(-15)=X2-24

X2=9

(12)=\frac{(Y2)+56}{5}

(60)=Y2+56

Y2=4

Thus,

The coordinates of a point N is (9,4)

Result: The correct option is C). (9,4)

3 0
3 years ago
Why does the formula for the number of hosts per subnet (2h – 2) require the subtraction of two hosts?
sineoko [7]
The term of humanism has been very different back during reinasance humanism and modern humanism.
Back then, the term is used to describe an act to preserve intellectual culture. In modern times, it used to describe the act to impose social justice among all human.
6 0
2 years ago
How do you solve 5/6 ×20
Alex73 [517]
Ok so remember that if you had
1/2 times 3/4 that equals (1 ties 3)/(2 times 4)
just mutply top number with top number and bottom number with bottom number so

remember that 20=20/1 so
5/6 times 20/1=
5 times 20=100
6 times 1=6

5/6 times 20/1=100/6 (can be simplified to 50/3 or 16 and 2/3)
5 0
3 years ago
The nth term of a sequence is n^2+20 A) work out the first three terms of the sequence B) how many terms in the sequence are les
a_sh-v [17]
<h3>♫ - - - - - - - - - - - - - - - ~<u>Hello There</u>!~ - - - - - - - - - - - - - - - ♫</h3>

➷ a) (1)^2 + 20 = 21

(2)^2 + 20 = 24

(3)^2 + 20 = 29

b) (5)^2 + 20 = 45

(6)^2 + 20 = 56

There are 5 terms less than 50

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

3 0
3 years ago
You have 4 chocolate bars to share evenly among you and your 2 sisters.<br> what is the equation?
Alenkasestr [34]

Answer:

4 divided by 2 = 2

Step-by-step explanation:

If there are 4 chocolate bars and 2 sisters then each sister gets 2.

4 0
3 years ago
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