Question

find area between two circle of radii R1 8cm and R2 22cm

Answer 1

Area between cocentric circles = Area of Larger Circle - Area of Smaller Circle

R2 > R1

So πR₂² > πR₁²

Therefore Area between =  πR₂² - πR₁²

π(22)² - π(8)²

484π - 64π

= 420π

= 420*22/7

= 60*22

= 1320

So the area between the two circles = 1320 m²

Hope this Helped!

Answer 2

Answer:

Area between two circle = 1319.64 $cm^{2}$

Step-by-step explanation:

According to the information provided in the question it is given as

Radius of first circle = R 1 =8 cm

Radius of second circle =R 2 =22 cm

We need to find the area between two circle

As seen from the question it is clearly understand that the area of remaining field between two circle of different radius  is

Area Remaining = Area of Second circle - Area of first circle

Area of first circle =  

$A=\pi r^{2} \\A= 3.142 \times 8\times 8\\\A= 201.08cm^{2}$

Area of second circle =

$A=\pi r^{2} \\A= 3.142 \times 22\times 22\\A= 1520.728cm^{2}$

Now substituting the values we get the answer

Area remaining  = 1520.728 - 201.08

                           = 1319.64$cm^{2}$

So the area between two circle is = 1319.64 $cm^{2}$