The answer can't be C or D because the unit of volume is always cubed. The formula for volume of cylinder is (pi)(r^2)(h) . The pi(r^2) part is the formula for area of a circle which is what the base of the cylinder is. Fortunately the area is already given as 28.2. Plug that into the volume formula and plug in 3.1 for the height and multiply. I get 87.42 and the answer choice B seems to be the closest option
The steps to determine the square root of 6241 are:
The digits of 6241 are paired as 62 41.
The unit digit of 6241 is 1. Hence, the possible unit digits after taking square root could be 1 and 9.
When we consider the first two digits of 6241, that are 62.
The number 62 lies between 7 and 8 that is, 49 < 15 < 64 which can be written as 72 < 15 < 82. Hence, the tens digit of the square root of 6241 is 7.
As the number obtained in step 2 is, 1 and 9. The numbers can be 71 or 79.
In order to determine the square root of 6241, we multiply the tens and one's digits in both cases.
62 lies between 72 and 82. Their product gives the value 56.
As 56 < 62, the square root of 6241 will be greater than 71 and 79 which is 79.
Thus, the square root of 6241 is 79.
