Answer:
450m
Step-by-step explanation:
so 5 people work each one for 21 minutes, that means 21+21+21+21+21 minutes altogether, namely 105 minutes, it took that long for 7 walls, hmmmm how long for just one wall then? well, 105 ÷ 7, namely 15 minutes then, for just 1 wall.
now, if it takes 15 minutes of work to do one wall, what about 5 walls? well, that'd be 15*5 or 75 minutes.
so if we have 3 folks working, how much would each one work? well, 75 ÷ 3, namely 25 minutes, so each of them will work 25 minutes, namely 25+25+25 minutes, so in 25 minutes, they'll be done with 5 walls.
Answer:
I think its C. I hope this helps.
The volume of a cone is V=(1/3)*(pi)*(r^2 )*(height)
V=(1/3)*(pi)*(1.5^2)(4)
V=9.43
or in terms of pi
V=3pi
Answer:
726 children
242 adults
Step-by-step explanation:
a + c = 968
6c + 11a = 7018
Use Substitution: c = 968-a
6(968-a) + 11a = 7018
5808 - 6a + 11a = 7018
5a = 1210
a = 242
c = 968 - 242 = 726