Answer:
Rajesh applied the wrong formula
Step-by-step explanation:
The problem is on mensuration of flat shapes, circles.
Rajesh applied the wrong formula for the calculation of the area of a circle
he used [tex]area= \pi d[/tex]
Rajesh is expected to solve for the area of a circle using the right formula, which is
[tex]area= \frac{ \pi d^{2}}{4} \\or\\area= \pi r^{2}[/tex]
substituting our data we have
[tex]area= 3.142*10^{2} \\area= 3.142*100\\area= 314.2[/tex]
