Answer:
D
Step-by-step explanation:
surface area of one can 2πrh+2πr²
=2πr(h+r)
≈2×3.14×3/2(4.25+1.5)
≈9.42(5.75)
≈54.165 in²
number of cans=1000/54.165
=18 cans
material used=18×54.165≈975 in²
material left=1000-975=25 in²
y/2 = tan(60) => y = 2 tan(60) = 2sqrt(3) = 3.464
The formula of an area of a square:
a - a side
We have
substitute:
Used:
What?
