Question

Taking pie as 22/7 ,find the circumference of a circle with radius 8CM

Answer 1

Answer:

Solution :

We have formula for area of circle.

area of the circle=pie r2

Put Values

⇒200.96 = 22/7 * r²

⇒200.96 * 7/22 = r²

⇒1406.72/22 = r²

⇒63.96 = r²

⇒r² ≈ 64

⇒r = √64

⇒r = 8

∴ Radius is 8 cm

We have formula for Circumference of circle :

Put Values

⇒2 * 22/7 * 8

⇒44*8/7

⇒352/7

⇒50.28 cm

∴ Circumference of circle is 50.28 cm

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Step-by-step explanation:

Answer 2

Answer:

Circumference = 2pie r

Step-by-step explanation:

r = 8

Circumference = 2 x 22/7 x 8 = 352/7 = 50.28

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