Solve the question below. Answer fast.
Dear Student
Given: Radius of well= 1.4 m
Depth of well= 28 m
So, Volume of earth that must be dug out= πr²h = 3.14 x 1.4 x 1.4 x 28 = 172.48 m³
Now, for finding out the cost of plastering, we have to find out the curved surface area= 2πrh = 2 x 3.14 x 1.4 x 28 = 246.40 m²
So, cost of plastering= 246.40 x 4.50 = Rs. 1108.80
Regards
Given: Radius of well= 1.4 m
Depth of well= 28 m
So, Volume of earth that must be dug out= πr²h = 3.14 x 1.4 x 1.4 x 28 = 172.48 m³
Now, for finding out the cost of plastering, we have to find out the curved surface area= 2πrh = 2 x 3.14 x 1.4 x 28 = 246.40 m²
So, cost of plastering= 246.40 x 4.50 = Rs. 1108.80
Regards