Question

Mensuration - If the ratio between the curved surface area and the total surface area of a right-circular cylinder is3:4,find the ratio of height to the radius of the cylinder.l​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Given that:Curved surface area : Total surface area =1:2

Curved surface area :616=1:2

Curved surface area=

2

616

=308

⇒

2πr(h+r)

2πrh

=

2

1

⇒

h+r

h

=

2

1

⇒2h=h+r

⇒h=r

Curved Surface area=2πrh=2πr

2

=308 since h=r

⇒2×

7

22

r

2

=308

⇒r

2

=

44

308×7

=49

⇒r=7cm

Since r=h

h=7cm

Volume of the cylinder=πr

2

h=

7

22

×7×7×7=1078cm

3

Step-by-step explanation:

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