Question

find the cost of plastering the curved surface of a well which is 20 m Deep and has a diameter of 7 at the bottom he rate of plastering is 15 per square​

Answer 1

Answer:

6600

Step-by-step explanation:

GT

h=20m

r=7/2m

WKT,

CSA=

$2\pi(rh)$

=2×22/7×7/2m×20m

=440m^2

GT

For plastering

1m^2=15

Then,

440m^2=440×15

=6600

HOPE THIS HELPS.........