Circular pond with a diameter of 4 metres fence 1 metre from the edge. Calculate how many metres of fencing will be required?
Answers
Answered by
6
To find:-
- Metres of fencing required leaving 1 m from the edge.
Solution :-
Given,
A circular pond of diameter 4 m.
We know that,
- Circumference = 2πr
Putting the values
→ Circumference = 2 × 3.14 × 4/2
→ Circumference = 4 × 3.14
→ Circumference = 12.56 m
Again,
→ Required fencing = 12.56 - 1
→ Required fencing = 11.56
Hence,
- 11.56 metres are to be fenced around the circular pond.
___________________________
Answered by
14
Given :-
- A circular pond of diameter 4 m.
We have to find:-
- Metres of fencing required leaving 1 m from the edge.
- It is clear that we won't fence in the pond but around the pound, which means we have to find the circumference of the circular pond.
- Since we have to find the circumference of a circular region, So circumference of circle,
Required Solution:-
- ⇒ Circumference = 2πr
- ⇒ Circumference = 2 × 3.14 × 4/2
- ⇒ Circumference = 4 × 3.14
- ⇒ Circumference = 12.56 m
But, we have to exclude 1 m,
- ⇒ Required fencing = 12.56 - 1
- ⇒ Required fencing = 11.56
⚛ Hence,
⇒ 11.56 metres are to be fenced around the circular pond.
Some Information :-
- Area of a circle = πr²
- A tangent is a line passing through one point on the circumference and is perpendicular to the radius to that point.
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