Question

the inner diameter of a circular well is 3.5 it is 10 metre deep find its inner curved surface area​

Answer 1

Answer:-

Your Answer Is 110 m².

Explanation:-

Given:-

• A circular well, i.e. cylindrical as it has a height.

• The well is 10 m deep i.e its height is 10 m.

• Inner Diameter of the well = 3.5 m.

To Find:-

• The Inner Curved Surface Area (CSA) of the well.

FormulaUsed:-

$\\ \large \blue{ \leadsto \boxed{ \orange{ \bf CSA = 2\pi rh.}}}$

Where,

• CSA = Curved surface Area of a cylinder.

• $\tt\pi = \dfrac{22}{7}.$

• r = Radius of the cylinder.

• h = Height of the cylinder.

So Here,

• CSA = ??[To Find].

• r = $\dfrac{3.5}{2}\ m.$

• h = 10 m.

Therefore,

By Using The Formula:-

$\\ \tt\leadsto CSA = 2\pi rh.$

$\\ \tt\leadsto CSA = 2 \times \frac{22}{ \cancel7} \times \frac{ \cancel{3.5}}{2} \: m \times 10 \: m.$

$\\ \tt\leadsto CSA = \bigg( \cancel2 \times 22 \times \frac{0.5}{ \cancel2} \times 10\bigg)m {}^{2}$

$\\ \tt\leadsto CSA = \bigg(22 \times 0.5\times 10 \bigg)m {}^{2} .$

$\\ \large \red{ \leadsto \boxed{ \blue{ \bf CSA = 110 \: m {}^{2} .}}}$

$\bf\therefore$ The Inner Curved Surface Area Of The Well Is 110 m².

Answer 2

Answer:

110 m²

Step-by-step explanation:

Given that, the inner diameter of a circular well is 3.5 it is 10 metre deep.

We have to find the inner curved surface area.

We know that we'll is circular in shape. So, we have to find the curved surface area of cylinder. And the curved surface area of cylinder is 2πrh.

From above data we have height is 10 m and radius is 3.5/2 m.

Substitute the values,

→ 2 × 22/7 × 3.5/2 × 10

→ 22 × 0.5 × 10

→ 220 × 0.5

→ 110

Hence, the curved surface area of well is 110 m².