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Black_prince [1.1K]
3 years ago
8

A 25-foot flag pole casts a shadow of 40 feet. What is the approximate height from the top of the flag pole to the top of the sh

adow? 45 47 65

Mathematics
1 answer:
Ann [662]3 years ago
8 0

Answer:

The height from the top of the flag pole to the top of the shadow = 47 feet.

Step-by-step explanation:

Given:

Height of the flag pole = 25 ft

Length of the shadow cast by the flag pole = 40 ft

To find the approximate height from the top of the flag pole to the top of the shadow.

Solution:

On drawing the flagpole and the shadow, we get a right triangle of which the legs are given.

Leg 1 =25\ ft

Leg 2 = 40\ ft

We need to find the hypotenuse of the right triangle.

Applying Pythagorean theorem.

Hypotenuse^2=Leg1^2+Leg2^2

Hypotenuse^2=25^2+40^2

Hypotenuse^2=625+1600

Hypotenuse^2=2225

Taking square root  both sides :

\sqrt{Hypotenuse^2}=\sqrt{2225}

Hypotenuse=47.1\approx 47

Thus, the height from the top of the flag pole to the top of the shadow = 47 feet.

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AysviL [449]

Answer:

The area and the perimeter of the picture are:

  • <u>Area = 160 cm^2</u>
  • <u>Perimeter = 67.31 cm</u>

Step-by-step explanation:

To find the area of that figure, you can find the area how if it was a rectangle and next subtract the area of the triangle in the upper part. The area of a rectangle could be found by the next formula:

  • Area of a rectangle = base * height

As you can see in the picture, the base is 16 cm and the height is 12 cm, then we replace in the formula:

  • Area of a rectangle = 16 cm * 12 cm
  • Area of a rectangle = 192 cm^2

Now, we calculate the area of the triangle to subtract to the area we found and obtain the real area, the formula to obtain the area of a triangle is:

  • Area of a triangle = (base * height) / 2

The height of the triangle is 8 cm, and the base is 8 cm too, because you subtract to the base of the rectangle (16 cm) the measurements in the upper part (16 - 4 - 4 = 8), Now, we replace in the formula:

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We subtract to the found area:

  • Area of the picture = 192 cm^2 - 32 cm^2
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So, we replace in the theorem:

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