Question

the circumference of a circle is 31.4 cm . find the radius and the area of the circle? [take \pi=3.14]

Answer 1

Answer:

The radius of given circle is 5 cm and the area of the circle is 78.5 sq.cm.

Step-by-step explanation:

Circumference of a circle = $2 \pi r$

Since w are given that the circumference of circle is 31.4 cm

So, $31.4 = 2 \times 3.14 r$

$\frac{31.4}{2 \times 3.14}= r$

[tex5= r[/tex]

So, radius of given circle is 5 cm

Area of circle = $\pi r^2$

                       = $3.14 (5)^2$

                       = $78.5$

Thus the area of circle is 78.5 sq.cm.

Hence the radius of given circle is 5 cm and the area of the circle is 78.5 sq.cm.

Answer 2

Answer:

78.5 cm² is answer

here is ur answer

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