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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.
20 marbles
7+8+5=20
Uhh lmk
Answer:
8
Step-by-step explanation:
28 divided by 2/7 =8 8 times 3 =24 1/7 is left remaining 1/2 of 8 is 4 4+24=28