Question

2. A circular well is dug. Its diameter is 3.5 m and its depth is 6 m. What is the volume of
removed to make the well?
​

Answer 1

Answer:

• volume of the well = 3.14 × r^2 ×6

3.14 × 1.75^2 ×6

3.14 × 2.7 × 6

8.4 ×6

= 50.4 cm^2

Answer 2

$\huge\mathbb{\underline{SOLUTION:-}}$

$\bold{Given}\begin{cases}\sf{Height=6m}\\ \sf{Diameter=3.5m}\end{cases}$

• We have to find the volume of well

$\boxed{\sf{Volume\:of\: cylinder= \pi r{}^{2} h}}$

• The diameter is 3.5m
• then the radius is
• $\sf r=\frac{3.5}{2}$

$\bf\underline{\red{According\:To\: Question:-}}$

$\sf\implies Volume=\frac{\cancel{22}}{\cancel7}\times \frac{3.5}{\cancel2}\times \frac{\cancel{3.5}}{\cancel2}\times \cancel{6}\\ \\ \sf\implies Volume=11\times 0.5\times 3.5\times 3\\ \\ \sf\implies Volume=5.5\times 10.5\\ \\ \sf\implies Volume=57.75m{}^{3}$

• The volume of well is 57.75cubic metre

$\boxed{\sf{\red{Volume=57.75m{}^{3}}}}$

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