On a pie chart, a category representing 20% of the whole should correspond to a central angle of 20°.

No! 20% does not correspond to a central angle 20°.

Step-by-step explanation:

The central angle for pie chart is 360°.

So, a category represents 20% is 20%(360) for central angle.

Let's simplify it to get the angle,

Simplify it,

72°

So, 20% does not correspond to a central angle 20°.

25.3

step-by-step explanation:

1st step

add 3+6

=9

multipy 9*3

=37