Question

the curved surface area of a cylinder is 176 cm square and its base is 38.5 cm square .Find the volume of the cylinder.......plz quick tmrow my exam

Answer 1

base area =38.5sqcm
πr²=38.5
r²=38.5*7/22
r²=(7/2)²
r=7/2 cm--(1)
csa of the cylinder = 2πrh---(2)
given csa =176cm----(3)
(2) =(3)

2*22/7*7/2*h =176

22h=176
h=176/22
h=8cm

volume = πr²h

= 22/7* 7/2*7/2*8
=308cm³

Answer 2

base area =38.5sqcm
πr²=38.5
r²=38.5*7/22
r²=(7/2)²
r=7/2 cm--(1)
csa of the cylinder = 2πrh---(2)
given csa =176cm----(3)
(2) =(3)

2*22/7*7/2*h =176

22h=176
h=176/22
h=8cm

volume = πr²h

= 22/7* 7/2*7/2*8
=308cm³

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