In the county sports Stefan was timed at 28.6s for the 200 m What is the upper bound for the time she could have taken?

Upper bound = 28.65s

Step-by-step explanation:

Since it is a unit of time and it is a decimal the unit of accuracy will 0.1 , we will halve it and it will be 0.05

0.1 ÷ 2 = 0.05

Upper bound = 28.6 + 0.05 = 28.65

Lower bound = 28.6 - 0.05 = 28.55

if the pizza is divided equally into 2 equal halves then you would get

πr^2/2

where r is the radius of the pizza.

happy to

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ummm seems that u didnt post the attachement !