Question

Guys tolongin yaa...
Besok di antar nih...
Mohon pakai cara yang bener dan jelas..

Makasih Sebelumnya

Answer 1

L1(kerucut) = Πr(r+s)
=3,14×3(3+5)
=9,42×8=75,36dm
L2(tabung) =Πr(r+2t)
=3,14×3(3+2×9)
=9,42×21=197,82dm
L3(setengah bola) =4Πr^1/2
=4×3,14×3^×1/2
=12,56×9×1/2
=113,04:2 =56,52dm
L permukaan = L1+L2+L3
=75,36+197,82+56,52=329,7 dm