17. A cylindrical vessel open at the top has a diameter 20 cm and height 14 cm. Find the cost
of tin-plating it on
the inside at the rate of 7 per hundred square centimetre.
Answers
Answered by
1
Step-by-step explanation:
Given radius of cylinder =
2
D
=
2
50
=25 cm=0.25 m
Height of cylinder =3.5 m
CSA of cylinder = 2πrh
=2π(0.25×3.5)
CSA of cylinder =5.5 m
2
cost of painting per meter square =12.50 RS
Total cost of painting =12.50×5.5=68.75 RS
Similar questions