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3 years ago

A A B B C C D D Skip to navigation

Mathematics

1 answer:

nekit [7.7K]3 years ago

6 0

Answer:A B C D

Step-by-step explanation:

it is A B C D

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5 1/2 of 2 1/3 is what number?

MrRissso [65]

Answer:

19 1/4

Step-by-step explanation:

5 1/2 of 2 1/3

Change mixed fraction to improper fraction

11/2 of 7/2

Of means multiplication

11/2 x 7/2

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3 years ago

If the areas of two similar decagons are 625 ft^2 and 100 ft^2, what is the ratio of the perimeters of the decagons? tf is a dec

const2013 [10]

$\text{Answer: }\frac{\text{ Perimeter of first decagon}}{\text{ Perimeter of second decagon}}=\frac{5}{2}$

Step-by-step explanation:

Since we have given that

Area of two similar decagons are 625 ft² and 100 ft² ,

As we know the relation of area of similar figures, i.e.

$\frac{\text{ Area of first decagon}}{\text{ area of second decagon}}=\frac{625}{100}=\frac{a^2}{b^2}$

Now, we also know that ,

$\frac{\text{ Perimeter of first decagon}}{\text{ Perimeter of second decagon}}=\frac{a}{b}=\frac{\sqrt{625}}{\sqrt{100}}=\frac{25}{10}=\frac{5}{2}$

Hence,

$\frac{\text{ Perimeter of first decagon}}{\text{ Perimeter of second decagon}}=\frac{5}{2}$

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