Question

the difference between circumference and radius of a circle is 111cm the area of the circle is​

Answer 1

Answer:

1. r=111cm given
2. circumference of circle is =2πr
3. now circumference=2*3.14*114=715.92
4. area of circle=πr^2=38687.94

Answer 2

Answer:

The answer is $1386 \text{ cm}^2$

Step-by-step explanation:

Let radius of the circle is $r$

So circumference $2\pi r$

But given difference of circumference and radius of 111 cm

$\Rightarrow 2\pi r-r=111$

$\Rightarrow 2(\dfrac{22}{7} )r-r=111\\\\\Rightarrow \dfrac{44-7}{7}r=111\\\Rightarrow \dfrac{37}{7}r=111\\\Rightarrow r=111\times \dfrac{7}{37}=21$

Thus area of the circle

          $=\pi r^2=\dfrac{22}{7}\times (21)^2=22\times 21\times 3=1386 \text{ cm}^2$