**Answer:**

**Explanation:**

Heat capacity is related to a substance's ability to retain heat and the rate at which it will heat up or cool. For example, a substance with a low heat capacity, such as iron, will heat and cool quickly, while a substance with a high heat capacity, such as water, heats and cools slowly.

The length of the inclined plane is approximately** 12 ft**

The situation forms a** right angle triangle**.

<h3>Right triangle</h3>

**Right triangle **have one of its angle as 90 degrees.

Therefore,

The length of the **inclined plane **is the **hypotenuse** of the triangle. The length of the inclined plane can be found using **trigonometric ratios.**

height = 4 ft

angle(∅) = 19.45°

**sin 19.45 = 4 / h**

h = 4 / 0.33298412235

h = 12.0125847796

**h = 12 ft**

Therefore, the length of the inclined plane is approximately** 12 ft**

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