Answer:
π×64×4=804.25
Step-by-step explanation:
Formula of cylinder is π×square of radius×height
803.8
it's 3.14×8×8×4 which would give you 803.84 and then you round which would give you 803.8
4.485 ( rounded = 4.5)
1.3 x 1.5 x 2.3 = 4.485
formula for area is length × height
so we have 13+8 ×16+4
21×20 = 420m
3
g
