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Vlad [161]
3 years ago
11

What is the radius of a circle that has a circumference of 81.64 meters? r =___________a0m

Mathematics
2 answers:
slamgirl [31]3 years ago
5 0
 <span>Radius—r: 
2r(3.14) = 81.64 
6.28r = 81.64 
r = 13 

Answer: 13 cm is the radius.</span>
const2013 [10]3 years ago
3 0
<span>12.99m
</span>make me the brainiest answer
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A rectangle with a length of L and a width of W has a diagonal of 10 inches. Express the perimeter P of the rectangle as a funct
KatRina [158]
<h2>Answer:</h2>

The expression which represents the perimeter P of the rectangle as a function of L is:

          Perimeter=2(L+\sqrt{100-L^2})

<h2>Step-by-step explanation:</h2>

The length and width of a rectangle are denoted by L and W respectively.

Also the diagonal of a rectangle is: 10 inches.

We know that the diagonal of a rectangle in terms of L and W are given by:

10=\sqrt{L^2+W^2}

( Since, the diagonal of a rectangle act as a hypotenuse of the right angled triangle and we use the Pythagorean Theorem )

Hence, we have:

10^2=L^2+W^2\\\\i.e.\\\\W^2=100-L^2\\\\W=\pm \sqrt{100-L^2}

But we know that width can't be negative. It has to be greater than 0.

Hence, we have:

W=\sqrt{100-L^2}

Now, we know that the Perimeter of a rectangle is given by:

Perimeter=2(L+W)

Here we have:

Perimeter=2(L+\sqrt{100-L^2})

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3 years ago
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inysia [295]

Answer:

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Step-by-step explanation:

7 0
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14 more than 6 times a number is<br> greater than or equal to 28
Studentka2010 [4]

Answer:

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Step-by-step explanation:

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14 more than (so, add 14 to 6x)

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SOLVED:

6x≥14

x≥2.333333333333333

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Scorpion4ik [409]
The answer would be 1.40. The 3 significant figure are 1.39 and it wants us to round so we look at the 8 in 1.3981 and since 8 > 5 we know to round up.
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