Class8: The volume of a 5cm long cylindrical iron rod is30cm cube. Find its diameter.
Answers
Answered by
1
Answer:
Volume of cylinder is pi.r sq.h
22/7.r.r.5=30
r. r = 42/22
= 2 (approx)
r = root 2
Diameter =2 root 2
Answered by
1
Answer:
Step-by-step explanation:
Height of cylinder=5cm
Volume of cylinder=30cm³
πr²h=30
22/7×r²×5=30
r²=30×7/22×1/5
r²=21/11
r=√21/11cm
Diameter=2×radius
Diameter=2×√21/11
Diameter=2√21/11cm
Similar questions