Answer:
question 5 = 167.5ft^3 so yeah correct
question 6 = the 4th answer = 2388ft^3
Volume using full pi = ; 2389.2ft^3 or 2389 ft^3 to 4sf.
Step-by-step explanation:
question 6 =
We have 13 Diameter. Which is 6.5 radius
D = 13
R = 6.5
H = 18
Surface area a of cylinder pi x 6.5^2 = 132.73229
or 42.25pi
Then we just multiply by the height to get the volume.
42.25x 18 = 760.18 pi
or 132.73229 x 18 =2389.18122
Volume = 2389.2ft^3 or 2389 ft^3 to 4sf.
As the answer given is 2388ft^3 then show your pi workings as 3.14 or 3.1459
