Math, asked by UdeetaDey, 1 year ago

diameter of a semicircular area is 21 m what is its perimeter?

Answers

Answered by Parthgarg1712
5
Diameter = 21 m
Radius = 21/2 m
Perimeter = pie r
=22/7×21/2
=3×11
=33m
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Parthgarg1712: he said perimeter frnd
Parthgarg1712: plz check
Parthgarg1712: plz follow me
UdeetaDey: i got this too, but the answer behind the book is different
UdeetaDey: i dont know why
Parthgarg1712: it may be misprinted
Parthgarg1712: plz mark as brainliest
UdeetaDey: i did
Parthgarg1712: thnx
UdeetaDey: the ans says 54
Answered by rosangiri28pfbc5r
3
given
diameter d =21 m
so radius r = 21/2 = 10.5m
Now,
perimeter =
r(2 + \pi)
= 10.5 (2+3.14)
= 10.5×5.14
= 53.97 m is right answer

UdeetaDey: 21/2 is 1.5 not 10.5
UdeetaDey: correct ans. is given as 54
Parthgarg1712: bro it is 10.5 only
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