Answer:
3rd option
Step-by-step explanation:
The volume (V) of a sphere is calculated as
V = [tex]\frac{4}{3}[/tex]πr³ ( r is the radius )
Given diameter = 4 then r = 4 ÷ 2 = 2 cm
V = [tex]\frac{4}{3}[/tex]π × 2³ = [tex]\frac{4}{3}[/tex]π × 8 = [tex]\frac{32\pi }{3}[/tex] cm³
combined volume = [tex]\frac{32\pi }{3}[/tex] + 20π = [tex]\frac{32\pi }{3}[/tex] + [tex]\frac{60\pi }{3}[/tex] = [tex]\frac{92\pi }{3}[/tex] cm³