38. A rectangle is inscribed in a semicircle with diameter 10 centimeters as shown. Express the area of the rectangle as a function of the height of the rectangle. (A) A(h) = 2h√√25-h² (C) A(h) = 2h√√5-n² (B)_A(h)=h√√10-h² (D) A(h) = 2h√√10-h² (E) A(h) = h√25-h²

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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### Problem Statement:
A rectangle is inscribed in a semicircle with a diameter of 10 centimeters as shown in the diagram. Express the area of the rectangle as a function of the height (h) of the rectangle.

### Diagram Explanation:
The diagram shows a semicircle with diameter \( d = 10 \) cm. A rectangle is inscribed inside the semicircle. The height of the rectangle is labeled as \( h \). The base of the rectangle extends to the diameter line of the semicircle.

### Options:
(A) \( A(h) = 2h \sqrt{25 - h^2} \)

(B) \( A(h) = h \sqrt{10 - h^2} \)

(C) \( A(h) = 2h \sqrt{5 - h^2} \)

(D) \( A(h) = 2h \sqrt{10 - h^2} \)

(E) \( A(h) = h \sqrt{25 - h^2} \)

### Conceptual Breakdown:
To solve this problem, we need to:

1. Identify the relationship between the height \( h \) of the rectangle and the total area of the rectangle.
2. Use the Pythagorean theorem to express the width of the rectangle in terms of its height \( h \).
3. Formulate the area of the rectangle \( A \) as a function of \( h \).

**Steps:**

1. **Radius of Semicircle:**
   Since the diameter \( d = 10 \) cm, the radius \( r = \frac{d}{2} = 5 \) cm.
   
2. **Width in terms of height using Pythagorean theorem:**
   The width of the rectangle \( w \) is the horizontal leg of a right triangle whose hypotenuse is the radius \( r \) and the other leg is the height \( h \). Therefore, \( w^2 + h^2 = r^2 \).
   Given \( r = 5 \), we have:
   \[
   w^2 + h^2 = 5^2
   \]
   \[
   w^2 + h^2 = 25
   \]
   \[
   w = \sqrt{25 - h^2}
   \]
   
3. **Area of the rectangle as a function of height:**
   The area \( A \) of
Transcribed Image Text:### Problem Statement: A rectangle is inscribed in a semicircle with a diameter of 10 centimeters as shown in the diagram. Express the area of the rectangle as a function of the height (h) of the rectangle. ### Diagram Explanation: The diagram shows a semicircle with diameter \( d = 10 \) cm. A rectangle is inscribed inside the semicircle. The height of the rectangle is labeled as \( h \). The base of the rectangle extends to the diameter line of the semicircle. ### Options: (A) \( A(h) = 2h \sqrt{25 - h^2} \) (B) \( A(h) = h \sqrt{10 - h^2} \) (C) \( A(h) = 2h \sqrt{5 - h^2} \) (D) \( A(h) = 2h \sqrt{10 - h^2} \) (E) \( A(h) = h \sqrt{25 - h^2} \) ### Conceptual Breakdown: To solve this problem, we need to: 1. Identify the relationship between the height \( h \) of the rectangle and the total area of the rectangle. 2. Use the Pythagorean theorem to express the width of the rectangle in terms of its height \( h \). 3. Formulate the area of the rectangle \( A \) as a function of \( h \). **Steps:** 1. **Radius of Semicircle:** Since the diameter \( d = 10 \) cm, the radius \( r = \frac{d}{2} = 5 \) cm. 2. **Width in terms of height using Pythagorean theorem:** The width of the rectangle \( w \) is the horizontal leg of a right triangle whose hypotenuse is the radius \( r \) and the other leg is the height \( h \). Therefore, \( w^2 + h^2 = r^2 \). Given \( r = 5 \), we have: \[ w^2 + h^2 = 5^2 \] \[ w^2 + h^2 = 25 \] \[ w = \sqrt{25 - h^2} \] 3. **Area of the rectangle as a function of height:** The area \( A \) of
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