Question

find diameter of a circle with radius 6 CM ​

Answer 1

find diameter of a circle with radius 6 CM

Answer :

We have AD= diameter of circle of radius

6cm=12cm

So, AB=BC=CD= 3/12 =4cm

BD=BC+CD=4+4=8cm

Hence required perimeter=arc of semicircle of

radius 6cm+ arc of semicircle of radius 4cm+ arc

of semicircle of radius 2cm

=(π×6+π×4+π×2)cm

=12πcm.

Required Area = area of semicircle with AD as diameter+area of semicircle with AB as diameter−area of semicircle with BD as diameter.

= 2/1× 7/22 ×6² + 2/1 × 7/22 ×2² − 2/1 × 7/22 ×4²

= 2/1 × 7/22 (6² +2² −4² )

= 7/264cm²

=37.71cm²

Answer 2

Answer:

Step-by-step explanation:

We know that

Diameter = radius + radius

D = 2R

D = 2x6

D = 12 cm :)