Answer:
56.52 cm³
Step-by-step explanation:

Diameter= 2 ×radius
Radius
= 6 ÷2
= 3cm
Height, h= 6cm
Volume of the cone

= 56.52 cm³
Answer:
y=4x
Step-by-step explanation:
(new - original)/original = mark up
(78.08-64)/64= mark up
14.08/64 =mark up
.22 = mark up
multiply by 100 to get to a percent
mark up = 22 percent