Which number has a 5 in it that’s 10 times the 5 in 13.725

Mathematics

1 answer:

Naya [18.7K]3 years ago

3 0

Answer:

0.05

Step-by-step explanation:

10*.005

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How do you solve for h? <br> Having trouble with #45

Thepotemich [5.8K]

$S=2\pi r h+2\pi r^2\\
2\pi rh=S-2\pi r^2\\
h=\dfrac{S-2\pi r^2}{2\pi r}\\
h=\dfrac{S}{2\pi r}-1$

3 0

3 years ago

The plane is tiled by congruent squares of side length $a$ and congruent pentagons of side lengths $a$ and $\frac{a\sqrt{2}}{2}$

umka2103 [35]

The percentage of this plane that's enclosed by the pentagons is closest to: D. 56.

<h3>How to determine the percentage?</h3>

Since the side of the small square is a, then the area of the tile is

given by:

Area of tiles = 9a²

<u>Note:</u> With an area of 9a², 4a² is covered by squares while 5a² by pentagons.

This ultimately implies that, 5/9 of the tiles are covered by pentagons and this can be expressed as a percentage as follows:

Percent = 5/9 × 100

Percent = 0.555 × 100

Percent = 55.5 ≈ 56%.

Read more on area of square here: brainly.com/question/8902873

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Complete Question:

The plane is tiled by congruent squares of side length a and congruent pentagons of side lengths a and a²/a, as arranged in the diagram below. The percent of the plane that is enclosed by the pentagons is closest to (A) 50 (B) 52 (C) 54 (D) 56 (E) 58