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3 years ago

the circumference of a circle can be found using c=2/pi r. use the formula to solve for the radius of a circle, r.

Mathematics

2 answers:

prohojiy [21]3 years ago

8 0

Answer: $r=\dfrac{C}{2\pi}$ , where C is the circumference of the circle.

Step-by-step explanation:

We know that the formula to calculate the circumference of the circle is given by :-

$C=2\pi r$ , where r is the radius of the circle.

To find the expression for r , we divide $2\pi$ on the both sides , we get

$\dfrac{C}{2\pi}=r$

$r=\dfrac{C}{2\pi}$

Hence, the expression for r will be:-

$r=\dfrac{C}{2\pi}$ , where C is the circumference of the circle.

liq [111]3 years ago

4 0

Circle = is 6.28
π=3.14

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andrew11 [14]

The values of x and y are 0.2 and 0.4 respectively.

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$y:1.5=0.2:0.75\\ \\ \frac{y}{1.5}=\frac{0.2}{0.75} \\ \\ 0.75y=0.2*1.5\\ \\ 0.75y=0.3\\ \\ y=\frac{0.3}{0.75}=0.4$

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3 years ago

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Semenov [28]

Answer:

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3 years ago

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sesenic [268]

We will turn the left side into the right side.

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Now use the identity

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3 years ago

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neonofarm [45]

Answer:

The square lawn.

Step-by-step explanation:

This is because a perimeter of 36 meters means that it is 81 ft^2 of total area.

A circle of 36 meters means that it would be 36/2 $\pi$ r, which would be smaller that 81 ft^2.

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3 years ago

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