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22/7×14×14
616cm2
=22/7×14×14
=616
b)L =π×r
=3,14×20×20
=1256
c)L =π×r
=3,14×35×35
=3846.5
d)L =π×r
=22/7×7×7
=154
e)L=π×r
=3,14×10×10
=314
f)L=π×r
=22/7×21×21
=1386
maaf klo jawabanya salah