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3 years ago

Find the circumference of the circle

Mathematics

2 answers:

Brilliant_brown [7]3 years ago

6 0

The circumference is 72.22. The formula for circumference is the diameter times pi, which in this case multiplies to about 72.22

Bezzdna [24]3 years ago

5 0

Answer:

72.22 inches

Step-by-step explanation:

First, we need to find the radius.

The radius is half of the diameter, which in this case is 23.

23/2 = 11.5

Now we can use the formula for the circumference of a circle.

$C = 2\pi r$

Plug in 11.5 for r.

$C=2\pi (11.5)$

C ≈ 72.22

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Answer:

The car's average 18 number of miles per gallon

Step-by-step explanation:

The car has different efficiencies depending if its used on highway or city streets.

The efficiency on a highway is:

$E_h=\dfrac{350}{15}\;\text{miles/gal}=23.33\;\text{miles/gal}$

The efficiency for city driving is:

$E_c=\dfrac{280}{18}\;\text{miles/gal}=15.56\;\text{miles/gal}$

We now that the car uses twice as many gallons for city driving as for highway driving. This means that, for every gallon consumed, 2/3 are for city driving and 1/3 are for highway driving.

Then, we can calculate how many miles makes the car on average as:

$E=\dfrac{1}{3}E_h+\dfrac{2}{3}E_c\\\\\\E=\dfrac{1}{3}\cdot 23.33+\dfrac{2}{3}\cdot15.56=7.78+10.37=18.15\;\text{miles/gal}$

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2 years ago

What property is =x+2-2

Alla [95]

You could find the property by using the skill Pemdas

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2 years ago

N the spring of 2008, petrol cost £1.029 per litre in london. on the same day, the exchange rate was $1 = £0.497. what was the p

Dmitriy789 [7]

1 liter of petrol in London costs £1.029

Since 1 gallon consist of 3.7854 liters, the cost of 3.7854 liters is calculated as:

Cost of 1 gallon of petrol in London = 3.7854*1.029 =£3.8951766

Next, we convert the pounds (£) to dollar($)

Since the exchange rate is 1$ =£ 0.497

£3.8951766 in $ = £3.8951766/£ 0.497 = 7.837$

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