so the ice rink diameter is 80 feet what mean that the radius of ice rink is 40 feet
the walkway is 10 feet wide
so 10+40=50 what mean that the radius and the walkway wide make 50 feet length together
using this length area = pi*r^2 = 3,14*(50)^2 = 7850 feet squared
area of ice rink = 3,14*40^2 = 5024 feet squared
area of the walkway = 7850-5024 = 2826 feet squared
hope helped
Answer:

Step-by-step explanation:
Yuan earned $336.3457.
You are asked to round this number to the nearest hundredth, that is, so there are only two digits after the decimal.
$336.34|57
A rule in rounding numbers is: if the first figure to be dropped is 5 with any nonzero digits following it, then the last figure kept should be rounded up (increased by 1).
The number becomes $336.35.

Answer:
the answer is 900
Step-by-step explanation:
the 900 will not be necessary
Answer:
The percentage error is 3.6 % .
Step-by-step explanation:
Formula


As given
Annie estimates that the height of a bookcase is 78.25 in. The actual height is 75.50 in.
Here
Approx value = 78.25 in
Exact value = 75.50 in

Error = 2.75
Put in the formula


Error percentage = 3.6 %
Therefore the percentage error is 3.6 % .