Answer:
6785.8 mm^2
Step-by-step explanation:
This figure is made up a cylinder and a hemisphere.
Surface area formula for cylinder:
2(pi)r(r + h)
r = 18mm
h = 24mm
substitute and solve:
2(pi)18(42)
= 1512pi
Surface area for a hemisphere:
1/2(4pi x r^2)
r = 18mm
substitute and solve:
1/2(4pi x 18^2)
= 648pi
add together
1512 pi + 648 pi = 2160pi
convert to normal units
2160 pi = 6785.84
round to nearest tenth
= 6785.8 mm^2
