The dimensions of a closed rectangular box are measured
as80cm, 60 cm, 50cm, respectively, with a possible error of .2 cm
ineach dimension. use differentials to estimate the maximumerror in
calculating the surface area of the box.

The maximum error in  calculating the surface area of the box is 152 square cm.

Step-by-step explanation:

We are given the following information in the question:

The dimensions of a closed rectangular box are measured  as 80 cm, 60 cm, 50 cm, respectively.

Possible error = 0.2 cm

Surface area of rectangular box =

where l, b and h are the length, breadth and height of the rectangular box respectively.

Change in area =

Putting the values, we get,

Change in area =

The maximum error in  calculating the surface area of the box is 152 square cm.

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

maybe - definition of supplementary angles. im not sure. sorry

step-by-step explanation: