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3 years ago

Hi!!! what’s the area and formula for this problem??

Mathematics

1 answer:

alexdok [17]3 years ago

8 0

Answer:

134.28 m²

Step-by-step explanation:

I suppose this is an isosceles triangle

tan 75° = 2 + √3 = 3.73 = h / 6 (h: height and 6 = 12/2, 1/2 of base)

h = 6 x 3.73 = 22.38

Area = (12 x 22.38) / 2 = 134.28

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Need help .... Regular octagon ABCDEFGH rotates 360 degree clockwise about it's center . After how many 45 increments will A' (

oksian1 [2.3K]

Answer:

If the octagon is clockwise, then after 5 times 45 increments A' will coincide with F.

If the octagon is counterclockwise, then after 3 times 45 increments A' will coincide with F.

Step-by-step explanation:

Case 1: Let the octagon is clockwise

It is given that a regular octagon ABCDEFGH rotates 360 degree clockwise about it's center.

There are 8 vertices and the central angle between two consecutive vertices is 45 degrees.

Central angle between AB is 45 degree.

Central angle between AC is

$\text{Angle between AB}+\text{Angle between BC}=45^{\circ}+45^{\circ}=2\times 45^{\circ}$

Central angle between AD is

$\text{Angle between AB}+\text{Angle between BC}+\text{Angle between CD}=45^{\circ}+45^{\circ}+45^{\circ}=3\times 45^{\circ}$

Similarly,

Central angle between AE is

$4\times 45^{\circ}$

Central angle between FA is

$5\times 45^{\circ}$

Therefore after 5 times 45 increments A' will coincide with F.

Case 2: Let the octagon is counterclockwise

$FA=AH+HG+GF$

$FA=45^{\circ}+45^{\circ}+45^{\circ}$

$FA=135^{\circ}$

$FA=3\times 45^{\circ}$

Therefore after 3 times 45 increments A' will coincide with F.

8 0

3 years ago

Read 2 more answers

Maria has 10 sheets of paper. She cuts some of the sheets into five parts each. After that Maria has 22 pieces in total. How man

vladimir2022 [97]

Answer:

3 sheets

Step-by-step explanation:

It is given that:

Number of sheets Maria had = 10

Maria cut sheets into = 5 parts each

After cutting the sheet, the number of the sheets that Maria fad in total = 22

So Maria cut 1 sheet = 5 parts

Therefore, 1 sheet gives 5 pieces

2 sheets gives 10 pieces.

Similarly 3 sheets gives 15 pieces.

So number of sheets left with Maria = 10 - 3

= 7 sheets

Therefore, now Maria has = 15 + 7

= 22 pieces

Thus, Maria cut 3 sheets of paper.

4 0

3 years ago

Please I need help on this problem this assignment due tomorrow!!!!!!! be brainliest if help me

madreJ [45]

Answer:

don't click that guy's link it's a virus

I'm pretty sure the answer if 50% chance

Step-by-step explanation:

I just combined the probabilities because it's for both lights

hope it helps <3

6 0

3 years ago

What is 5 to the second power plus 4

earnstyle [38]

Answer:

Step-by-step explanation:

5^2 = 25

25 + 4 = 29

7 0

3 years ago

Read 2 more answers

50 question true-false final exam (two-points each question) and you never paid attention in the class (or knew anything about t

DanielleElmas [232]

Title:

<h2>Check the explanation.</h2>

Step-by-step explanation:

As all the questions of the exam carry 2 points, at least $\frac{56}{2} = 28$ questions need to be correct to get 56 marks.

In order to get a maximum of 56 marks, at most 28 answers needs to be correct.

Every question has two option. Hence, the probability of getting a particular question right is $\frac{1}{2}$ .

The probability that exactly n questions will be right is $^{50}C_n (\frac{1}{2} )^n (\frac{1}{2} )^{50 - n} = ^{50}C_n (\frac{1}{2} )^{50}$ .

The probability that at most 28 questions will be right is ∑ $^{50}C_n (\frac{1}{2} )^{50}$ , $0\leq n\leq 28$ .

Similarly, the probability that at least 30 questions will be right is ∑ $^{50}C_n (\frac{1}{2} )^{50}$ , $30\leq n \leq 50$ .

3 0

3 years ago