Question

a well of 14 M inside diameter is dug 15m deep Earth taken out is spread all around to a with of 7m to form a embracement find the height of them basement

Answer 1

Answer:

5m

Step-by-step explanation:

Find the radius of the well dug:

Radius = Diameter ÷ 2

Radius = 14 ÷ 2 = 7m

Find the volume of the earth dug:

Volume = πr²h

Volume = π(14 ÷ 2)²(15) = 2310 m³

Find the height of the embarkment:

Volume = π(R² - r²)h

2310 = π( (7+7)² - 7²)h

2310 = 462h

h = 2310 ÷ 462

h = 5m

Answer: The height is 5m

Answer 2

$\bold{\huge{Hay\: !!}}$

$\bold{Dear\: user!!}$

$\bold{\underline{Question}}$ - a well of 14 M inside diameter is dug 15m deep Earth taken out is spread all around to a with of 7m to form a embracement find the height of them basement

$\bold{\underline{Answer}}$ - According to the question we know that Determiner is 14 and hight is 15

Now,

Radius = 7 , $volume = \pi {r}^{2} h \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \pi \times {7}^{2} \times 15$

volume = 2310 m³

Now, volume = π(R² - r ²)*h

=> 2310 = 462 h

=> h = 5m