Question

the radius of one circular field is 5 m and that of other is 3 metre find the radius of the circular field whose area is the difference of the areas of the first and second field​

Answer 1

Answer:

area of 1st circular field is πr²=π5²=25π

area of 2nd circular field =π3²=9π

area difference 16π²

so radius of new circular field is

we know that area of circular =πr²

16π=πr²

r²=16

so radius =4

Answer 2

Answer:

4cm Radius circle

Step-by-step explanation:

πR²-πr²= π+5²- π+ 3²

=> π+25 - π+9

=> π(25 - 9)

=> π×16cm

Therefore our Radius of third circle will be=

πr'²=16×π

r'²= 16×π/π

r'²=16

r'=4cm