Question

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

Answer 1

Answer

First we will find the area of first field which radius is 5 meter = πr^2

3.14 * 5^2 = 78.5 sqm

now we will find the area of another field of radius 3 metre = πr^2

3.14 * 3^2 = 28.26 sqm

now we will find the difference of the areas of both field/

78.5 – 28.26 = 50.24

now by applying the area formula of circle we will find the radius of the third field/

Area of third field = πr^2

50.24 = 3.14*r^2

50.24÷3.14 = r^2

r^2 = 16

r = √16

r = 4

radius of the field is = 4 cm.

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