The total surface area of a pipe with internal and external diameter 14cm and 28cm and height 10cm is *
Answers
Answer:
December 20, 2019avatar
Bhavinya Rathiya
ANSWER
Given
external radius r
2
=8, height of cylinder h=14
we have,
2πh(r
1
+r
2
)=1320
⟹8+r
1
=
2×22×14
1320×7
⟹r
1
=7cm
December 20, 2019
avatar
Toppr
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