cylinder problem 1:
A cylinder has a radius of 8 cm and an height of 11 cm.
a) calculate the surface area
b) calculate the volume
answer:
a) answer surface area:
A = 2 * r * π * (r + h)
A = 2 * 8 * π * (8 + 11)
A = 905.44 cm²
A: The surface area is 955.04 cm².
b) answer volume:
V = r² * π * h
V = 8² * π * 11 (π = 3.1415..)
V = 2 211.6 cm³
A: The volume is 2 211.6 cm³