Will give brainliest answer

28.26 unit^2

Step-by-step explanation:

The circumference is given by

C = 2 * pi *r

18.84 = 2 * 3.14 * r

18.84 = 6.28 r

Divide each side by 6.28

18.84 /6.28= 6.28 r/6.28

3 = r

The area of a circle is given by

A = pi r^2

A =3.14 * 3^2

   = 28.26 unit^2

Step-by-step explanation:

Solution,

Circumference of circle= 18.84 units

Finding the radius,

Circumference of circle= 18.84

or,

or, 2 * 3.14 * r = 18.84

or, 6.28 r = 18.84

or, r= 18.84/6.28

r = 3 units

We have,

Radius= 3 units

Finding the area of circle:

plugging the value of radius(r)

= 3.14 * (3)^2

= 3.14 * 9

= 28.26 units^2

hope this helps...

fabric (square meters)                   cloaks

7                                                           21

4/3                                                         4

step-by-step explanation:

we are told that harry needs 2 square meters of fabric for every 6 wizard cloaks he makes.

1. first of all we will find how many cloaks can be made from 1 square meter of fabric by dividing 6 by 2.

we can see that 3 cloaks can be made from 1 square meter of fabric. now we will multiply 3 by 7 to find number of cloaks made from 7 square meters of fabric.

therefore, harry will make 21 cloaks from 7 square meters of fabric.

2. let us find how many square meters of fabric will be needed to make 4 cloaks.

first of all we will find fabric needed for 1 cloak by dividing 2 by 6.

we can see that fabric needed for 1 cloak is   square meter. now we will multiply   by 4 to find fabric needed for 4 cloaks.