Question

a closed cylindrical tank of of height 1.4 m and radius is 56 cm is made up of thick metal sheet how much metal sheet is required

Answer 1

Hi ,

Dimensions of the cylidrical tank are

Height(h) = 1.4 m = 1.4 × 100cm = 140cm

Radius ( r ) = 56 cm

Metal sheet required = Total surface

Area

= 2πr( r + h )

= 2 × ( 22/7 ) × 56( 56 + 140 )

= 2 × 22 × 8 × 196

= 68992 sq cm

= 6.8992 sq m

I hope this helps you.

:)

Answer 2

Heya,

Given:

Radius = 56cm
Height = 1.4m= 1.4×100=140cm

Metal sheet required=TSA (Total surface area of the cylindrical tank)

Metal sheet required= 2πr(r+h)

Metal sheet required= 2×22/7×56 (56+140)

Metal sheet required= 2×22×8×196

Metal sheet required= 44×1568

Metal sheet required= 68992 cm^2

Hope my answer helps you :)

Regards,
Shobana