Question

the radii of two concentric circles are 19cm and 16cm respectively. the area of the ring enclosed by these circle ​

Answer 1

area of enclosed ring is 304cm

Answer 2

Answer:

kindly see the answer below...

Step-by-step explanation:

Here,

the radii of two concentric circles are 19cm and 16cm respectively...

Now, area of the circle with radius 19cm is

$= \pi \times {19}^{2}$

$= 1134.57 \: {cm}^{2}$

and, the area of the circle with radius 16cm is

$= \pi \times {16}^{2}$

$= 804.57 \: {cm}^{2}$

therefore, the area of the ring enclosed by these rings are :: --

$= 1134.57 - 804.57$

$= 330 \: {cm}^{2}$

the required answer is 330cm².

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