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iVinArrow [24]
3 years ago
10

Equation of a circle whose circle is at the origin and whose radius is 16

Mathematics
1 answer:
algol [13]3 years ago
4 0
Equation of the circle with centre at the origin and radius 'R' is 
<span>x²+y²=R² Hence When R= 16, the required equation is </span>
<span>x²+y²=16² </span>
<span>i.e. x²+y²=256 </span>
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Suppose the diameter of a circle is 6 units What is its circumference?
Kipish [7]

Answer:

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Step-by-step explanation:

Hi!

<u>The formula for finding the circumference of a circle is 2πr:</u>

In that case, all we need to do <em>first </em>is to divide the diameter by 2, so we can substitute that into the equation.

6 ÷ 2 = 3

So we have 2π × 3 to solve.

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We can estimate the circumference by multiplying by 3.14.

6 × 3.14 = 18.84

(actually multiplying by π gives 18.849... which is pretty close!)

Thus, the circumference is \boxed{6\pi{\text{\:or\:18.84\:roughly}}}.

Hope this helps!

6 0
3 years ago
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How could you put that is a mathematic form??
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