3 years ago

What is the radius to 3cm

Mathematics

2 answers:

never [62]3 years ago

7 0

Answer:

It is 6

Step-by-step explanation:

The radius is all the way around so all you have to do is multiply 3 times 2 which is 6

madam [21]3 years ago

6 0

If r is the radius of a circle, its area is given by π× r 2

As radius is 3 c m , area is π × 3 2

= 3.1416 × 9

= 28.2744 c m 2

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Step-by-step explanation:

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If a family has 6 children, in how many ways could the parents have 3 boys and 3 girls?

Jlenok [28]

The parents could have 3 boys and 3 girls in 400 ways

<h3>How to determine the number of ways?</h3>

The given parameters are

Children, n = 6

Boys, r = 3

Girls, r =3

The number of combination is:

$Ways = ^nC_{r1} *^nC_{r2}$

So, we have:

$Ways = ^6C_3 *^6C_3$

Apply the combination formula

$Ways = \frac{6!}{3!3!} *\frac{6!}{3!3!}$

This gives

Ways = 400

Hence, the parents could have 3 boys and 3 girls in 400 ways