Question

Reem wants to enclose a circular garden with a fence. The diameter of the garden is 5 ft. What is the minimum fencing she must buy?Round off to the nearest whole number.

Answer 1

Given :-

• Diameter of Garden = 5ft.

To Find :-

• Length of fencing ?

Formula used :-

• Circumference of circle = 2 * π * r
• Radius = (Diameter) / 2

Solution :-

Note :- Fencing is done Around Outside circular garden. So, we Have to Find Circumference of circle..

→ Radius = r = D/2 = (5/2) = 2.5 ft.

So,

→ Circumference of circle = 2 * π * r

→ Circumference of circle = 2 * 3.14 * 2.5

→ Circumference of circle = 5 * 3.14

→ Circumference of circle = 15.7 ft ≈ 16 ft.

Hence, the minimum fencing she must buy is 16ft.

Answer 2

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$\huge\tt{GIVEN:}$

• Reema wants to enclose a circular garden with a fence.
• Diameter = 5 ft.

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$\huge\tt{TO~FIND:}$

• the minimum fencing she must buy or the circumference of the circle

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$\huge\tt{FORMULAS~USED:}$

• The circumference of circle= 2πr
• Finding radius = D/2

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$\huge\tt{SOLUTION:}$

We can say that, The circumference of the circular garden = The fencing she have to buy

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First, let's find the radius

Radius = D/2

↪ 5/2

↪2.5 ft.

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As we know,

Circumference = 2πr

↪2× 3.14×2.5

↪5×3.14

↪15.7 ft.

Now in question,we are asked to round off the answer, then if we round off 15.7 ft., we'll get 16 feet as the answer.

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