The external and internal diameters of a hollow cylindrical pipe are 10 cm and 6 cm respectively. If the length of pipe is 21 cm , then find its the total surface area and volume.
Answers
Answered by
10
Since the cylinder is hollow
Total surface area= curved surface area of inner cylinder+curved surface area of outer cylinder
=2π*10*21+2π*6*21
=214.012
Hope it helps
Total surface area= curved surface area of inner cylinder+curved surface area of outer cylinder
=2π*10*21+2π*6*21
=214.012
Hope it helps
PrakritiAnand:
No
the answer is wrong
Ans: 368π cm^2 , 336π cm^3
ok let me check
Answered by
4
Answer:
Step-by-step explanation:
Total Surface area = Inner CSA + Outer CSA + 2× End cross sectional Area
= 2π3×21 +2π5×21 + 2π(5^2-3^2)
=368π cm^2
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