Soal ada di foto. No 18 & 19

Keliling lingkaran 1
=1/2π.d
=1/2.22/7.14
=22
Keliling persegi panjang
=2p+2l
=2.14+2.30
=28+60
=98
Keliling lingkaran 2
=3/4π.d
=3/4.22/7.14
=3/4.44
jadi luas total 22+98+33=153