find the perimeter of the given figure, if the diameter of the smaller semicircle is 4 cm.
ps I need the steps
thank u world : )
Attachments:
Answers
Answered by
1
radius of larger semicircle is half of 3 times the diameter of small circle.
I.e 6cm
nd radius of small circle is 2cm.
3 circles so. their perimeter will be 3*πr..where r is 2cm.
I.e 6cm
nd radius of small circle is 2cm.
3 circles so. their perimeter will be 3*πr..where r is 2cm.
Attachments:
Jitumani:
so.? did u something else.
no
ok
wait
the problem is i only have the answers and not the steps
i m sure it's correct... may be ans given is wrong...it happens sometimes
okay thanks
fr u know wastin ur time on me
welcm
its okay
Answered by
1
diameter of big semi circle = 3× diameter of smaller semicircle = 3× 4 cm = 12 cm
so ,radius of big semicircle (R) = 6 cm
radius of smaller semi circle = 2 cm
now,
perimeter of given figure = perimeter of big semicircle + 3× perimeter of smaller semicircle .
= πR + 3× πr
=π( R + 3r )
=π( 6 + 3× 2)
=π( 12)
=12π cm
=12 ×3.14 cm
=37.68 cm
so ,radius of big semicircle (R) = 6 cm
radius of smaller semi circle = 2 cm
now,
perimeter of given figure = perimeter of big semicircle + 3× perimeter of smaller semicircle .
= πR + 3× πr
=π( R + 3r )
=π( 6 + 3× 2)
=π( 12)
=12π cm
=12 ×3.14 cm
=37.68 cm
Similar questions