Exercise 3 Find the radius of the button YOUR VOTE COUNTS 5 cm for the diameter
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Step-by-step explanation:

Explanation:

It can be fuhrer explained as under :-

Formula for radius is : -

Since

C

i

r

c

u

m

f

e

r

e

n

c

e

,

C

=

2

π

r

Hence

r

=

C

/

2

π

Here ,

C = 5

π

=

22

7

or

3.14

Hence by putting value in formula

r

=

C

/

2

π

r

=

5

/

2

π

or

r

=

5

/

2

⋅

22

7

or

r

=

5

/

2

⋅

3.14

or

r

=

5

/

6.18

or

r

=

0.796

the answer will be the last one

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: