Question

Nomor 10 besok dikumpul pakai cara

Answer 1

Selimut kerucut = √(12,5² + 3,5²)
=13

A. L permukaan = L 1/2 bola + L kerucut tanpa alas
L= (1/2 x 4 x 22/7 x 3,5 x 3,5)+(22/7 x 3,5 x 13)
L= 77+143
L=220

B. v=v 1/2 bola + v kerucut
v=(1/2 x 4/3 x 22/7 x 3,5³) + (1/3 x 22/7 x 3,5² x 12,5)
v=90+160
v=250