Question

Find the curved surface area, the total surface area and the volume of right circular cylinder whose radius r and height h are given. R=12m and H=23m

Answer 1

EXPLANATION.

• GIVEN

Radius of right circular cylinder = 12 m

Height of right circular cylinder = 23 m

TO FIND.

1) = curved surface area of cylinder

C. S. A = 2πrh

=> 2 X 3.14 X 12 X 23

=> 1733.28 cm^2

2) = Total surface area of cylinder

T. S. A = 2πr ( r + h)

=> 2 X 3.14 X 12 ( 12 + 23 )

=> 2 X 3.14 X 12 ( 35 )

=> 2737.6 cm^2

3) = Volume of a cylinder.

VOLUME = πr^2h

=> 3.14 X 12 X 12 X 23

=> 10399.68 cm^3

Answer 2

$\green{\bold{\underline{\underline{Given}}}}$

$\bigstar \: \red{\bold{{{The \: Radius(r) \: of \: right \: circular \: cylinder = 12m}}}}$

$\bigstar \: \orange{\bold{{{The \: hight(h) \: of \: right \: circular \: cylinder = 23m}}}} </p><p>$

$\green{\bold{\underline{\underline{To \: Find}}}}$

$\bigstar \: \blue{\bold{{{The \: curved \: surface \: area}}}}$

$\bigstar \: \blue \: \bold{\orange{{{The \: total \: surface \: area}}}}$

$\bigstar\blue \: \bold{\red{{{The \: volume \: of \: right \: circular \: cylinder}}}}$

$\green{\bold{\underline{\underline{Solution}}}}$

We know that,

1) The curved surface area = C. S. A = 2πrh

=> 2 × 3.14 × 12 × 23

=> 1733.28 cm²

We know that,

2) The total surface area = T. S. A = 2πr (r + h)

=> 2 × 3.14 × 12 (12 + 23)

=> 2 × 3.14 × 12 (35)

=> 2737.6 cm²

We know that,

3) The volume of right circular cylinder =

VOLUME = πr^2h

=> 3.14 × 12 × 12 × 23

=> 10399.68 cm³