tolong bantu jawab rumusnya aja soalnya jawabannya sudah ada pliss

Nomor 4]

Keliling Arsiran :
= Keliling Lingkaran + (2 x 14)
= 22/7 x 14 + (28)
= 44 + 28
= 72 cm


Nomor 6]

d = K/π
d = 132/22/7
d = 42 cm

L = ¼ π d²
L = ¼ x 22/7 x 42²
L = 22/28 x 1764
L = 1386 cm²