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hoa [83]
3 years ago
15

La parcel·la fa 30 metres de llargada i 25 metres d’amplada. Calcula els metres de tanca que faran falta per mantenir el recinte

tancat mentre es fan les obres.
Mathematics
1 answer:
hichkok12 [17]3 years ago
8 0
Necesitas multiplicar 30 veces 20 para obtener 750
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if 1 gallon of paint covers 400 square feet, about how many gallons of paint are needed to paint the outside of a spherical tank
ollegr [7]
Given:
Diameter if the spherical tank = 20 ft.
Now,
We know,
radius = diameter / 2
          = 20 / 2
          = 10 ft.
Now, 
The area of the spherical tank = 4 \pi  r^{2}
        
                                            = 4 \pi  (10)^{2}

                                            = 4 * \pi *100

                                            = 1256.637061
 
                                            = 1256.64~ft^2-->rounded  

Now,
According to the question,
400 ft² needs 1 gallon of paint
1 ft² needs (1 / 400) gallon of paint
1256.64 ft² needs (1 / 400) * 1256.64 gallon of paint
                        = 3.1416 gallon of paint
                        = 3.14 gallon of paint --------------> rounded

So, we need 3.14 gallon of paint


6 0
4 years ago
The farmer decided that he ordered enough planks for an arena that measured 115 1/4 ft by 63 1/2 ft. Is he correct? Explain.
Mars2501 [29]

Answer:

<h2>The question we need to answer is what is the perimeter of the arena</h2>

Step-by-step explanation:

The question we need to answer is what total length of plank did the farmer ordered for the arena.

to solve for the length of plank to cover the arena we need to solve for the perimeter of the arena.

given data

length L= 115 1/4 ft = 115.25ft

width W= 63 1/2 = 63.5ft

perimeter= 2L+2W

perimeter= 2(115.25)+2(63.5)

perimeter= 230.5+127

perimeter= 357.5ft

This means that the farmer ordered a total length of 357.5ft of plank

3 0
3 years ago
Victor is going to send some flowers to his wife. Dayton Florist charges $3 per rose, plus $12 for the vase. Tammy's Flowers, in
s344n2d4d5 [400]

Answer: the costs would be the same if he orders 29 rose flowers.

Step-by-step explanation:

Let x represent the number of roses that Victor would order such that the cost will be the same with either flower shop.

Dayton Florist charges $3 per rose, plus $12 for the vase. This means that if he orders x rose flowers, the total amount that he would pay is

3x + 12

Tammy's Flowers, in contrast, charges $2 per rose and $41 for the vase. This means that if he orders x rose flowers, the total amount that he would pay is 2x + 41

For the costs to be the same, the number of rose flowers that he orders would be

3x + 12 = 2x + 41

3x - 2x = 41 - 12

x = 29

4 0
3 years ago
Question 20 of 45<br> In right triangle ABC shown below, what is the length of AC ?
dimulka [17.4K]
In this question, you have to use the Pythagorean theorem. (the formula is in the box, ‘a squared’ and ‘b squared’ is used to find the legs of the triangle, while the ‘c squared’ in the formula is used to find the hypotenuse of the triangle.

5 0
3 years ago
HELP- Picture Included
emmainna [20.7K]
1000 mg = 1 g
the prefix "milli" means "thousandth", which is why there are 1000 mg in one gram

Use that equation above as the conversion factor
3500 mg = (3500 mg)*(1 g/1000 mg) = (3500/1000) g = 3.5 g

So in short,
3500 mg = 3.5 g

Answer: 3.5
5 0
4 years ago
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