find the area of base and radius of a cylinder if its curved surface atea is 660 sqcm and hieght is 21 cm
Answers
Answered by
2
Step-by-step explanation:
660=2πrh
330=πr×21
330/21=πr
330/21×7/22=r
r=5
base area =πr^2
π5^2
22/7×25 = 78.5 (approx)
Answered by
0
Answer:
Radius=5cm
Area=78.5cm²
Step-by-step explanation:
We know that height of cylinder is 21cm.
Also,
CSA=660cm²
Hence,
2πrh=660
r=330/(3.14x21)
r=5.004cm
Approximately, 5cm
with the value of radius now known we can use this to find the area of base.
A=πr²
A=3.14x5x5
A=78.5cm²
I hope this helps you.
Have a great day!
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