Question

51.
The curved surface area of a right
circular cylinder of base radius 3 cm
is 94.2 cm. The volume (in cm) of the
cylinder is (Take t = 3.14)
(1) 113.04
(2) 138.6 Tv
& 141.3 2.1443
= 3.14 x 32 x.
125.6
(4) 125.​

Answer 1

$<font color=red><marquee behavior=alternate>Solution</marquee></font>$

for a right circular cylinder of radius r and height h ,the curved surface area(L.S.A) is..

=2πrh

now..r=3cm....and...L.S.A=94.2cm²

∴94.2=2×3.14×3×h

=>h=(94.2)/(2×3.14×3)

=>h=5 cm

∴volume=πr²h=[3.14×3²×5]cm²

=141.3 cm²

$<font color=green><marquee direction="Right">hope this help you$

Answer 2

141.3 is answer ok byyyy