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hammer [34]
3 years ago
11

10- 13 if kind enough plssss w work so i can actually understand

Mathematics
1 answer:
Alex787 [66]3 years ago
6 0

Answer:

At least 1

Step-by-step explanation:

Yeah

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What is the surface area of the figure shown? (use 3.14 for pi)
SpyIntel [72]

This is a combination of the formula of several figures.

The first one is the bottom of the cylinder AKA a circle.
The second one is the cylinder - the bottom and the top.
The third one is a cone without a bottom.

The first one can be written like this: r^2*3.14 where r is the radius of the circle
The second one is written like this: 2*3.14*r*h where r is the radius, and h the height
The third one is written like this: l*r*3.14

After this you just have to input the values. 
bottom        cylinder        Cone             (Use calculator if possible)
(3^2*3.14)+(2*3.14*3*5)+(6*3*3.14)=
28.26 + 94.2 + 56.52 = 178.98 in^2

The correct answer is 178.98 in^2.
Youre welcome. 




EXTRA:

If youre wondering how to find the different formulas, you can search for the full formula, then remove the parts you do not need, by matching them with the formula of the part you want to remove.

Example:
Cylinder:
SA = 2(pi<span> r</span><span> 2</span><span>) + (2 </span><span>pi </span><span>r)* h
</span>In this case, i didnt need the top and bottom, then i look for the formula of a circle.
Circle SA = pi r^2

Is this anywhere in the cylinder? Yes! The first part.
Then we are left with:
2 + (2 pi r)*h
But that 2 looks strangely placed, and with some reason, one quickly understands that it means "top AND bottom", but since we removed the circle surface, we have to remove that part too. 
So the final result of the formula is:
2 pi r h


4 0
3 years ago
write this sentence into an inequality.- The weight limit of the desk is a maximum of 40 pounds. PLZ TELL ME QUICK
dusya [7]

-- The LIMIT is 40 pounds.

-- The weight HASTA be 40 pounds or less.  It can't be more.

-- 40 pounds is OK, and anything less than 40 pounds is OK too.

-- 41 pounds or more is too much.

-- Here are all the OK conditions:
. . . . Weight = 40 pounds.
. . . . Weight is less than 40 pounds.

--  Summary:  Weight can be equal to 40 pounds or less than 40 pounds.

Can you write that same sentence with the mystical symbols of Math ?

How about        W ≤ 40 lbs
5 0
3 years ago
In a class, 7 students walk to school, two fifths ride the bus, and 32% are dropped off by their parents. How many students ride
34kurt

Answer:

About 40% I think-

Step-by-step explanation:

Basically, you change 2/5 into a percentage and you should get 40 percent.

8 0
3 years ago
Tom was measuring a piece of wood to build a shelf for his daughter. The shelf is 36 inches long. He tells his daughter, Hadlee
Rasek [7]
They are the same length,because 3 fr is the same as 12 inches times 3 equals 36 inches
7 0
3 years ago
Help I need the answer ASAP!!​
saw5 [17]
Yes I’m going back to the sun yet I have a couple questions and I’m not gonna be able I do that but I’m sorry I don’t have a lot to say about to do this but I’m not going back to the sun today or
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