4.75 feet, because you would multiply 5 by 1.54 which gives you 7.25 subtract that from 12
Answer:
Please see attached picture for full solution.
Sorry, I'm not sure how to do Q7 :(
Answer:
4, 6, 8, 10, 30
Step-by-step explanation:
length of pipe= 30m
Inside dia. = 1.2m
Outside dia. = 1.8m
Volume of concrete= (outside dia. - inside dia.)h
V= (pi)
v= [(3.14*0.9*0.9)-(3.14*0.6*0.6)]30
v= (3.3534-1.1304)30
v=(2.233)30 = 66.690m cube
since it's volume the answer 66.690 is in cubic meters.