Answer:
c
Step-by-step explanation:
area of a circle = πr²
area = A²
A =√ 12π
A = 2 √ 3π
Given:
The number is 3091.
To find:
The number of hundreds blocks if there are no thousands block.
Solution:
The given number is 3091.
It can be written as:
![3091=3000+0+90+1](https://tex.z-dn.net/?f=3091%3D3000%2B0%2B90%2B1)
![3091=3\times 1000+0\times 100+9\times 10+1\times 1](https://tex.z-dn.net/?f=3091%3D3%5Ctimes%201000%2B0%5Ctimes%20100%2B9%5Ctimes%2010%2B1%5Ctimes%201)
![3091=3\ Thousands+0\ Hundreds+90\ Tens+1\ Ones](https://tex.z-dn.net/?f=3091%3D3%5C%20Thousands%2B0%5C%20Hundreds%2B90%5C%20Tens%2B1%5C%20Ones)
There are no thousands block. So,
![3000=30\times 100](https://tex.z-dn.net/?f=3000%3D30%5Ctimes%20100)
![3000=30\ Hundreds](https://tex.z-dn.net/?f=3000%3D30%5C%20Hundreds)
Therefore, the number of hundreds blocks in 3091 is 30.