Answer:
1865.16 m^2
Step-by-step explanation:
first let 's find radius of a circle
radius=diameter/2
=18/2
=9 m
area of a cylinder=2πrh+2πr2
=2*3.14*9*24 + 2*3.14*(9)^2
=1356.48 + 2*3.14*81
=1356.48 + 508.68
=1865.16 m^2
5+2 = 7
Add 5 more (1 more magazine) and the total amount equals 12
So.. bought 2 erasers
-5=1+x/3
Subtract 1 from both sides
-6=x/3
Multiply both sides by 3
-18=x
Check:
1+ -18/3=1-6=-5. Works!
So the answer is x= -18