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AfilCa [17]
2 years ago
13

Two pillars have been delivered for the support of a shade structure in the backyard. they are both ten feet tall and the cross

sections of each pillar have the same area. explain how you know these pillars have the same volume without knowing whether the pillars are the same shape.
Mathematics
1 answer:
BartSMP [9]2 years ago
3 0

The steps to determine whether the pillars have the same volume are;

First, we must know that the volume of an object of uniform surface area is the product of its Area and height.

The uniform area of each pillar is then evaluated and if equal;

Both pillars can be concluded to have the same volume.

We must first recall that for various shapes, the volume of the shape is a function of its height.

For example: a A cylinderical pillar and a rectangular prism pillar;

Volume of a cylinder = πr²h

Volume of a Cuboid = l × w × h

Since h = h.

Therefore, for both pillars to have the same volume; their Areas must be equal.

πr² = l × w

Learn more about Area and volume here

brainly.com/question/987829

#SPJ4

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Ellen said she spent half her money for lunch and half of what was left for a movie. She now has $1.20. How much did she spend f
goldenfox [79]

Answer: She spend $1.20 for lunch.

Step-by-step explanation:

Let the total amount be 'x'.

Half of her money spend for lunch be \dfrac{x}{2}

Half of her money left for a movie be \dfrac{x}{2}

Amount she has now = $1.20

So, According to question, it becomes ,

\dfrac{x}{2}=1.20\\\\x=1.20\times 2\\\\x=\$2.40

Hence, Amount she spend for lunch is \dfrac{x}{2}=\dfrac{2.40}{2}=\$1.20

Therefore, she spend $1.20 for lunch.

8 0
3 years ago
If PQRS is a rectangle, find the length of QT
MAVERICK [17]

Step-by-step explanation:

Since, opposite sides of a rectangle are equal and each angle is of 90°.

\therefore QP = RS = 14 cm

In \:\triangle QPS, \: \angle QPS = 90\degree

\therefore \: QS=  \sqrt{QP^2+ PS^2}   \\  \therefore \: QS=  \sqrt{(14)^2+ (20)^2 }  \\  \therefore \: QS=  \sqrt{196 + 400}  \\ \therefore \: QS=  \sqrt{596} \\ \therefore \: QS=  24.41 \: m

\because Diagonals of a rectangle bisects each other.

\therefore\: QT = \frac{1}{2} QS\\\therefore\: QT = \frac{1}{2} \times 24.41\\\therefore\: QT =12.205\\\huge\orange {\boxed {\therefore\: QT =12.21\:m}}

4 0
3 years ago
1 Marlena has a bag of coins. The bag
poizon [28]

Answer:

The probability is 1/6

Step-by-step explanation:

Firstly, we need to get the total number of coins

that would be the sum of all the coins present

We have this as;

8 + 10 + 4 + 2 = 24 coins

The number of nickels is 4

So the probability of selecting a nickel is the number of nickels divided by the total number of coins

We have this as;

4/24 = 1/6

8 0
3 years ago
What are the solutions of the equation 4x^2 + 3x = 24 – x?
HACTEHA [7]
<span>B) -3 or 2
I just used a calculator so I can't explain but I hope it helps :)
</span>
4 0
4 years ago
Read 2 more answers
Write your question here keep it simple and clear
igor_vitrenko [27]

。☆✼★ ━━━━━━━━━━━━━━  ☾  

12 + 12 + 18 + 18 = 60

The perimeter is 60 cm

Have A Nice Day ❤    

Stay Brainly! ヅ    

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7 0
3 years ago
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