Answer:
There will be about 18 grams remaining.
Step-by-step explanation:
If you have 500 grams to start and it decreases by 20% each day for 15 days, you can use the following equation:
Remaining amount =
Plug this into a calculator and you should get 17.59218604, which, when rounded to the nearest gram, equals 18 grams remaining.
Hope this helps!
The radius of the cylinder should be approximately 2.040 inches long.
<h3>How to calculate the radius of a rocket to contain a required quantity of powder</h3>
The volume required to store the powder is the sum of the volumes of the cylinder and the cone, whose expression is in this case:
204 in³ = (π/3) · r² · (4 in) + π · r² · h
204 in³ = (4/3 + h) · π · r²
204 in³ = (4/3 + 7 · r) · π · r²
204 = (4π/3) · r² + 7π · r³
7π · r³ + (4π/3) · r² - 204 = 0
The <em>positive</em> roots of the <em>cubic</em> equation are:
r ≈ 2.040 in
The radius of the cylinder should be approximately 2.040 inches long.
To learn more on volumes: brainly.com/question/1578538
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