Answer:
4.21
Step-by-step explanation:
12 is less than 21 therefore its bigger
Round
321.786 is about 322
240.23 is about 240
322+240=562
about 562
Answer: 400
Step-by-step explanation:
<h3>The circumference of circle is

units</h3>
<em><u>Solution:</u></em>
Given that,
Radius of circle =
units
<em><u>To find: circumference of circle</u></em>
<em><u>The circumference of circle is given as:</u></em>

Where, r is the radius of circle
Substitute, r = 

Thus circumference of circle is
units
Like of segment being r, calculated in the picture is the length