Problem

1. Quelle est la hauteur du cylindre si son aire totale est de $1500 \mathrm{~cm}^{2}$ et que son rayon est de $5 \mathrm{~cm}$ ?
a) Environ $31,42 \mathrm{~cm}$
b) Environ $42,75 \mathrm{~cm}$
c) Environ $78,54 \mathrm{~cm}$
d) Environ $1342,92 \mathrm{~cm}$

Answer

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Answer

\(\boxed{\text{Final Answer: Environ } 42,75 \mathrm{~cm}}\)

Steps

Step 1 :Given the total surface area $A = 1500 \mathrm{~cm}^{2}$ and the radius $r = 5 \mathrm{~cm}$, we need to find the height $h$ of the cylinder.

Step 2 :The formula for the total surface area of a cylinder is: $A = 2 * \pi * r * (r + h)$

Step 3 :Substitute the given values into the formula: $1500 = 2 * \pi * 5 * (5 + h)$

Step 4 :Solve for $h$: $h \approx 42.7464829275686$

Step 5 :\(\boxed{\text{Final Answer: Environ } 42,75 \mathrm{~cm}}\)

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