" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
d = 21cm
r = 1/2 x d
= 21/2
= 10.5
luas lingkaran :
= phi x r x r
= 3.14 x 10.5 x 10.5
= 346.185
= 346.2 => Jawabannya C