a hollow cylinder whose thickness is negligible is open on both ends if radius of its base is 8 cm and height is 8 cm then the total surface area of the hollow cylinder is approximately equal to:-
a) 4πrhcm²
b)2πrhcm²
c)2πr(r+h)cm²
d)2πr²cm²
with explanation
Answers
Answered by
1
Step-by-step explanation:
Correct option is
C
2πrh+3πr
2
Total surface area painted = curved surface area of cylinder + curved surface area of sphere + area of base circle
A=2πrh+2πr
2
+πr
2
A=2πrh+3πr
2
Answered by
0
Answer:
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