wolfsaway
30.11.2021 •
Mathematics
Part 1 of 2
A pot of boiling water with a temperature of 100°C is set in a room with a temperature
of 20°C. The temperature T of the water after x hours is given by T(x) = 20 + 80 e -*.
(a) Estimate the temperature of the water after 3 hours.
(b) How long did it take the water to cool to 30°C?
1°C.
After 3 hours, the tempertaure of the water will be approximately
(Type an integer or decimal rounded to one decimal place as needs.)
Solved
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Ответ:
31.4 feet
Step-by-step explanation:
For this, you basically need to calculate the perimeter of the circle. You do this using this formula:
diameter of the circle times Pie = the circumference of the circle
Since The number of Pie is infinite use the rounded version of pie to 2 decimal points which is 3.14(This is why the question asks for an approximate)
(Diameter = 10 Pie = 3.14 therefore circumference = 31.4)
10 times 3.14 = 31.4 feet