if the hight of a solid cylinder is 7 cm and volume is 28
c.c ,then curved surface of cylinder is
please help me to do this
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Answer:
Height of a solid cylinder : 7 cm
Volume of the cylinder : 28 π cm³
We know,
Volume of a cylinder = πr²h units³
According to the problem,
28 π = π × r² × 7
=> r² = 28 π / 7 π
=> r² = 4
=> r = root over 4
=> r = 2
The radius is 2 cm.
Therefore,
Curved Surface Area = 2πrh
= (2 × π × 2 × 7) cm²
= 28 π cm²
Answer: The curved surface area of the cylinder is 28 π cm²
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Answer:
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