Bantu saya dong mas/mba

luas:
Lp : p×l
21×21
=441
Ll : 1/4×π×d
1/4×(22/7× 21):2
1/4×346:2
=173
LT : 441+173
= 614

keliling:
Kp : s×4
21×4
=84
Kl : π×d
(22/7×21):2
66:2
=33
KT : 33+84
=117