Question

find the circumference of the circle whose diameter is 7.7 M​

Answer 1

Answer:

C≈24.19

d Diameter

7.7

Using the formulas

C=2πr

d=2r

Solving forC

C=πd=π·7.7≈24.19026

Step-by-step explanation:

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Answer 2

Answer:

Given :-

• A circle whose diameter is 7.7 m.

To Find :-

• What is the circumference of the circle.

Solution :-

First, we have to find the radius :

Given :

• Diameter = 7.7 m

According to the question by using the formula we get,

$\implies \sf\boxed{\bold{Radius =\: \dfrac{Diameter}{2}}}$

$\implies \sf Radius =\: \dfrac{7.7}{2}$

$\implies \sf\bold{Radius =\: 3.85\: m}$

Hence, the radius of the circle is 3.85 m .

Now, we have to find the circumference of the circle :

Given :

• Radius = 3.85 m

According to the question by using the formula we get,

$\implies \sf\boxed{\bold{Circumference_{(Circle)} =\: 2{\pi}r}}$

$\implies \sf Circumference_{(Circle)} =\: 2 \times \dfrac{22}{7} \times 3.85$

$\implies \sf Circumference_{(Circle)} =\: \dfrac{44}{7} \times 3.85$

$\implies \sf Circumference_{(Circle)} =\: \dfrac{169.4}{7}$

$\implies \sf\bold{Circumference_{(Circle)} =\: 24.2\: m}$

$\small \sf\bold{\underline{\therefore\: The\: circumference\: of\: the\: circle\: is\: 24.2\: m\: .}}$