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primary 6 | Maths | Percentage
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Sheryl
Sheryl

primary 6 chevron_right Maths chevron_right Percentage chevron_right Singapore

19 cm , 15 cm and 28 cm if u cannot see clearly

Date Posted: 3 years ago
Views: 532
AC Lim
AC Lim
3 years ago
Perimeter (arc) of semicircle
= ½×π×28
= 44 cm

Perimeter for shaded parts
= 44 + 19 + 15
= 78 cm

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Priscilla Ng
Priscilla Ng's answer
788 answers (Tutor Details)
Formula for Circumference of a circle:

pi x diameter or 2 x pi x radius
Perimeter (arc) of semicircle
= ½×π×28
= 44 cm

Perimeter for shaded parts
= 44 + 19 + 15
= 78 cm
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
AC Lim
Ac Lim's answer
12422 answers (A Helpful Person)