Question

1. Which figure has a circumference of

31.4 centimeters?
Figure A Figure C
Figure B. Figure D

Answer 1

Figure B

Explanation:

Circumference of a circle is simply the length of the boundary of the circle which can be measured by the formula of
`2\pi r`

In the figure B the given radius in the figure is 5

Putting 5 in the formula to find the circumference of the circle gives

`2\pi *r`

=
`2*3.14*5` :
`\pi =22/7=3.14`

Circumference of the circle in fig B = 31.4 cm

So, Circle in the figure B will have the circumference of 31.4 cm. Also the Circumference of the fig A, C and D are different and are not equal to 31.4 cm