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3 years ago

How to find area of polygon please explain

Mathematics

1 answer:

Nat2105 [25]3 years ago

5 0

To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothegm. Here is what it means: Perimeter = the sum of the lengths of all the sides. Apothegm = a segment that joins the polygon's center to the midpoint of any side that is perpendicular to that side.

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7. Triangles CDE and RST are similar triangles. What is

andreyandreev [35.5K]

Answer:

CD = 25 ft

Step-by-step explanation:

$\triangle CDE \sim \triangle RST$

$\therefore \frac{CD}{20}=\frac{40}{32}$

(Corresponding sides of similar triangles are in proportion)

$\therefore \frac{CD}{20}=\frac{5}{4}$

$\therefore CD = \frac{5}{\cancel 4}\times \cancel {20} \:\:\blue{\bold{5}}$

$\therefore CD = 5\times 5$

$\therefore CD = 25\: ft$

6 0

3 years ago

Read 2 more answers

How do you do this Problem using factoring (fx)=4x^2-25?

Yanka [14]

Answer: (2x+5)(2x−5)

Step-by-step explanation:For me, what i like to do is to try divide the problem into two parts. For example in this problem, you would divide the 4x^2 into two 4x(since 4x+4x = 4x^2). Then 25 can be divide into into 5s (5x5=25). SInce you know that its a negative 25, you know that it has to be a negative on one of the sides. So the answer in factor form is (2x+5)(2x−5)

5 0

3 years ago

You earn 15n15n dollars for mowing nn lawns. how much do you earn for mowing one lawn? seven lawns?

kvasek [131]

You earn $15.00 for mowing one lawn.
15*7=105
You earn $105.00 for mowing 7 lawns.

6 0

3 years ago

Choose the expressions that are perfect cubes

Ludmilka [50]

Answer: the second fifth and sixth one

Step-by-step explanation:

4 0

3 years ago

40 x 125% step it out

AlladinOne [14]

Answer:

0.50 or 50%

Step-by-step explanation:

40 x 125 = X

1.25 as a decimal or 125%

40 x 1.25 = 0.50

0.50 --->50%

40 x 125% = 50%

3 0

2 years ago