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Anvisha [2.4K]
3 years ago
7

May I please receive help?

Mathematics
1 answer:
wariber [46]3 years ago
7 0

Answer:

<u>Length of the shadow</u> = 20.5 cm

Step-by-step explanation:

Given the 32-meter height of a tall building, and its casted shadow of 38 meters, we can find the unknown length of the shadow by using the Pythagorean Theorem.

<h2>Definition:</h2>

The <u>Pythagorean Theorem</u> states that the squared length of the hypotenuse of a right triangle is equal to the sum of the squared lengths of the legs.

The algebraic representation of the Pythagorean Theorem is:  

                     c² (hypotenuse) = a² (leg₁) + b² (leg₂)

<h2>Solution</h2>

To solve for the given problem:

Let c = 38 m (distance from the top of the building to the tip of the shadow)

a = unknown length of the shadow

b = 32m (height of the building)

Since we have to solve for the value of <em>a </em>(unknown length of the shadow), we must algebraically solve for <em>a</em>:

c² = a² + b²

Subtract b² from both sides:

c² - b² = a²  + b² - b²

a² = c² - b²

Substitute the given values into the formula for solving <em>a </em>:

a² = c² - b²

a² = (38)² - (32)²

a² = 1444 - 1024

a² = 1444 - 1024

Next, take the square root of both sides to solve for a:

\displaystyle\mathsf{\sqrt{(a)^2}\:=\:\sqrt{420}}

a = 20.49 or 20.5 cm

Therefore, the length of the shadow is 20.5 cm.

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