12.56 rounded to the nearest tenth (one place after the decimal) is 12.6... That is because when rounding you look at the number next to the value place you are rounding for, for this case, it is the tenths place, so you would look at the hundredths place (the next value place to the tenths) *Remember 5 or more raise the score, 5 or less give them less. So, if the ( hundredths ) place had a 5 or more the tenths place will be 6 because the original number is 5 and in the hundredths place the value is five, so, you raise the tenths place to one more value up. So, therefore that makes the answer *12.6*.
12.6 Since the place just to the right of the decimal is the tenth, we look at the digit to the right of it & if it is 5 or higher, we'll round up. If it's 4 or less, we'll leave it as is (taking out the hundredth place, or the digit to the right). Hope this helps!
The trampoline is a circle, so you use A=πr². Plug in 112.07 in for A since it's the area. Divide both sides by π to get 35.69. Take the square root to get 5.97.