First One Volume of the base = x * x * 4x = 4x^3
+ Volume of pyramid top x*x*x/3 = x^3/3
Answer A
Second One
cylinder volume pi r^2 h = 452.16
pi (6^2) h = 452.16 results in h~~4.0 cm (not necessary for solution)
Cone volume = pi r^2 h/3
= pi (6^2)h/3 = 452.16 results in h = ~~ 12 cm for the equivalent volume cone with same size lid(6cm)
Answe B