Question

plz solve 15,16 quickly​

Answer 1

Answer:

Curved Surface Area : Total Surface area = 1:2

Now,

Curved surface area = 1/2*616 = 308 cm^2

Now,

2πr(r+h) / 2πrh = 2

1+ r/h = 2

or,

h = r

Now,

Curved surface Area = 2πrh = 2πr^2 = 308

or,

44/7 * r^2 = 308

r^2 = 49, or r = 7 cm and hence h=7 cm

So,

Volume of this cylinder = πr^2 h = 22/7*7*7*7* = 22*49 = 2(539) = 1078 cm^3

Hope this helps you !