How many cubic meters of soil must be dug out to make a well $20$ meters deep and $2$ meters in diameter.

Open in App

Solution

According to question,

We know that dug is in the cylindrical shape,

diametre $= 20 m$ ...(given)

So, radius= $10 m$

Height of dug $= 20 m$

So, volume of dug= soil dug out $= π r^{2} h$

$\Rightarrow 3.14 \times 10 \times 10 \times 20$

$\Rightarrow 6280 m^{3}$

Suggest Corrections

Similar questions

Question 89

How many cubic meters of Earth must be dug to construct a well 7 m deep and of diameter 2.8 m?

Q. How many cubic meters of earth must be dug out to make a well of dimeter 5 m and depth 14 m?

Q. How many cubic metres of earth must be dug to make a well

14

metres deep and

4

metres in diameter?

Q. How many cubic metres of earth must be dug-out to sink a well 21m deep and 6m diameter?

How many cubic metres of earth must be dug out to make a well 28 m deep and 2.8 m in diameter ? Also, find the cost of plastering its inner surface at Rs. 4.50 per sq.metre.

Join BYJU'S Learning Program

How many cubic meters of soil must be dug out to make a well 20 meters deep and 2 meters in diameter.

According to question,We know that dug is in the cylindrical shape,diametre=20 m ...(given)So, radius=10 mHeight of dug=20 mSo, volume of dug= soil dug out =πr2h⇒3.14×10×10×20⇒6280 m3

How many cubic meters of soil must be dug out to make a well $20$ meters deep and $2$ meters in diameter.

According to question,

We know that dug is in the cylindrical shape,

diametre $= 20 m$ ...(given)

So, radius= $10 m$

Height of dug $= 20 m$

So, volume of dug= soil dug out $= π r^{2} h$

$\Rightarrow 3.14 \times 10 \times 10 \times 20$

$\Rightarrow 6280 m^{3}$