tolong ya kk kk semua

12.)L=1/4×π×d"
=1/4×3,14×30×30
=1/4×3,14×900
=1/4×2826
=76,5cm"

13.)L=1/4×π×d"
2464=1/4×22/7×d"
—————————×4
9856/22/7=d"
3136=d"
√3136=√d"
56=d
r=56:2
=28cm

14.)V=la×t
=12,56×5
=62,8cm'''

11.)luas persegipanjang
L=p×l
=24×15
=360cm"

luas segitiga
L=1/2×a×t
=1/2×27×12
=1/2×324
=162cm"
jadi, 360+162=522cm"

maaf kalo sala