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pshichka [43]
2 years ago
15

The circumference of a circle is about 50 centimeters (cm). Which is closest to the length of its radius? You may use 3.14 for

Mathematics
1 answer:
Romashka-Z-Leto [24]2 years ago
5 0

Answer:

8 cm

Step-by-step explanation:

The formula of circumference is c= πd------(1)

where C = circumference, π = 3.14 and d = diameter

as we know that diameter is equal to d= 2r

put the diameter formula in eq(1)

we get c= π2r-------(2)

from eq (2) separate r means radius

hence, r= c/(π2)------(3)

put the values in eq(3)

and radius is equal to 8 cm.

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3 years ago
What is the solution to the system of equations?
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Find the measure of the smaller angle formed by the hands of a clock at the following time.<br> 5:25
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2 years ago
How are exponents and radicals used to present roots of real numbers
MissTica

Answer:

       \sqrt[n]{a}  =a^{\frac{1}{n}}

Explanation:

Roots of real numbers can be represented by <em>radicals</em> or by<em> exponents. </em>

First, I present some examples to show how exponents and radicals are related, and then generalize.

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When you write 5² = 25, then 5 is the square root of 25.

And in general, if n is a positive integer and a^n=x , then a is the nth root of x.

Also, if n even (and positive)  and a is positive, then a^{\frac{1}{n}}   is the positive nth root of a

Thus,

       \sqrt[n]{a}  =a^{\frac{1}{n}}

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3 years ago
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