Math, asked by mervinjohn77, 8 months ago

A well 3.5 m in radius and 22.5 m deep has to be dug. Find the cost of digging the well at 3.40 per cubic metre.​

Answers

Answered by akt8
11

Answer:

the cost of digging the well at rupees 3.40 m³  RS. 2942.5725

Step-by-step explanation:

Volume of cylinder = πr²h

r - radius and h - height

It is given that,

A well 3.5 m in radius and 22.5 M deep has to be dug.

The cost of digging the well at rupees 3.40m³  

The well is like a cylinder, we have to find the volume of well

To find the volume of well

r = 3.5m and h = 22.5m

Volume of cylinder = πr²h = 3.14 * 3.5² * 22.5 = 865.4625 m³

To find the cost

cost = volume *cost per cm³  =  865.4625 * 3.40 = RS.2942.5725

Answered by Pokemonshell
3

Answer:

V=pir^2h

pi=22/7

r=3.5m

h=22.5m

v=(22/7)*3.5*3.5*22.5

v=886.25m^3

cost=v x 3.40

cost=2942.5725

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