Question

a cylinder pillar is 50 cm in diameter and 3.5 metre in height find the cost of whitewashing the curved surface of the pizza and the rate of rupees 1250 per metre square ​

Answer 1

Step-by-step explanation:

$surface \: area \: of \: cylinder = 2 \times \pi \times r \times h$

Given:d=50cm

$d = 2 \times r$

Given:d=50cm

r=50/2=25cm=0.25m

h=3.5m.

2πrh=2*22/7*0.25*3.5

=44*25/200

=44/8

=5.5m.

cost of white washing 1m =1250Rs.

cost of white washing 5.5m=1250*5.5

=6875.Rs.

Answer 2

Answer:

answer attached in photo