Question

The diameter of a circle is 20 m. Find the circumference
to the nearest tenth.
FEER

Answer 1

• diameter of a circle =20cm
• radius of circle =d ÷ 2

circumfarence of cicle = 2πr.............( 1 ) (value of a π =22÷7)

sibstituting value in ( 1 )

circumfarence of the circle

=2×22÷7×10

=440 ÷7

=62.85