Question

The distance around a circular track is 31.4 yards. What Is the radius of the track? Use 3.14 = π and round to the nearest tenths place

Answer 1

r=5

Explanation:

Circumference of a circle =

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

So,

[tex5= r[/tex]

So, radius of given circle is 5 cm

Area of circle =

=

=

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.