Question

It costs 3300 to paint the inner curved
surface area of a 10 m deep well The rate for
cost of painting is 30 per m®, find :
(a) inner curved surface area of the well.
(b) diameter of the well.
(c) capacity of the well.​

Answer 1

Step-by-step explanation:

(a) 3300=10*area

area =3300/10

=330m®

(b)diameter=

2πrh=330

440/7*r=330

r=330*7/440

r=21/4

r=5.25

d=5.25*2=10.5