tolong ya kakak, sekaligus caranya

r= 12 cm
S= 20 cm
Ditanya= Berat (V)?
PS= 1 cm³ > 1 g

t²= S²-r²
t²= 20²-12²
t²= 400-144
t= √256
t= 16 cm

VK= ⅓ x La x t
VK= ⅓ x 3,14 x 12 x 12 x 16
VK= 3,14 x 12 x 4 x 16
VK= 3,14 x 12 x 64
VK= 3,14 x 768
VK= 2411,52 cm³ > 2411,52 g

VB= ⅔πr³
VB= ⅔ x 3,14 x 12 x 12 x 12
VB= 3,14 x 8 x 12 x 12
VB= 3,14 x 8 x 144
VB= 3,14 x 1152
VB= 3617,28 cm³ > 3617,28 g

Berat= VK+VB= 2411,52 g + 3617,28 g= 6028,80 g

Hopefully this is the best for you, stay focus and be the best, Buddy :)