Question

There is a rectangular tank of length 180m and breath 120m in a circular field.If the area of the land of the field is 40000m,what is the radius of the field?

Answer 1

Answer:140

Step-by-step explanation:Area of the tank

= length × breadth

=180×120=21600m2

Total area of the circular plot

=40000+21600=61600m2

∴ area of circle = 61600

π(radius)2=61600

(radius)2=61600×722

radius=2800×7−−−−−−−√

=7×7×400−−−−−−−−−√

7×20=140m