look at the right triangle below!what is the length of the side AC? berapa panjang AC?
1. look at the right triangle below!what is the length of the side AC? berapa panjang AC?
Jawaban:
4√6
Penjelasan dengan langkah-langkah:
First,you must know the trigonometrybsics:
[tex] \sin( \alpha ) = \frac{o}{h} \\ \cos( \alpha ) = \frac{a}{h} \\ \tan( \alpha ) = \frac{o}{a} [/tex]
or simply SOH CAH TOA and the special angles (you can find the table in the internet)
Now,sinceyou know the adjacent (BD)of the lefttriangle,you can find the height (AD)using tan of Bwhich js60°
[tex] \tan(60) = \frac{ad}{4} = \sqrt{3} [/tex]
This leaves us with AD =4√3
Thenwe can substitute it into the sin of C
[tex] \sin(45) = \frac{4 \sqrt{3} }{ac} = \frac{ \sqrt{2} }{2} [/tex]
Then,you can operate this by cross multiplyingand get the final answer,which is AC =4√6
2. What is the length of the side x?
Jawaban:
√44
Penjelasan dengan langkah-langkah:
x = √(12²-(√8²+6²)²)
x = √(12²-10²)
x = √(144-100)
x = √44
x = 2√11
3. what is X the length of the square's side?
Jawaban:
katakan peta katakan peta
4. Look at the picture below. If the side of a small square is 2 cm, then what is the area of the figure?
2² x { L (1+2) + L (3+4) + L5 + L6 + L7
= 4 x { 3 + 2 + 3 + 4 + 6 }
= 4 x { 18 }
= 72 cm² ✔️
The area of the figure is 72 cm².
_________
Did you know? Area triangle = ½ x base x heightwhere the base is perpendicular to the height.
___
5. What is the side length of CD ?Do you know the answer is ...
first, find diameter AC by phytagoras theorem: AC = sqrt of (AB^2 + BC^2)
= sqrt (39^2+52^2) =sqrt 4225=65
By the same way find CD
= sqrt of (AC^2-AD^2) = sqrt (65^2-25^2)
= sqrt (4225-625) = sqrt 3600 = 60
6. in the figure below, the value of x is ... cm
sya pikir 5,5 cm dah kayanya kayanha8
*maaf kalo nggak salah*
7. The perimeter of a square is 36 m. What is the length of the side of the square
Answer:
Lengthofsquare:
Perimeter = length²
36 = length²
l = √36
l = √6²
l = 6cm
the length of square is 6cm
[tex]{\color{aqua}{\boxed{\mathfrak{LordKeyarga23}}\:}}[/tex]
Jawab:
a = 9 m
Penjelasan dengan langkah-langkah:
P = 4 a
36 = 4 a
a = 36 ÷ 4
= 9
8. Find the value of x in the figure below.
Jawaban:
2x + 5x + 3x + 90° = 360°
10x + 90° = 360°
10x = 360° - 90°
10x = 270°
x = 270°/10
x = 27°
9. Find the area of the shaded part in the figure below
4. Area = 49.2075 m²
5. Area = 63.25 m²
Penjelasan/Explanation
Number 4
The area of that figure equals to the area of the square minus the area of the semicircle.
The length of each side: s = 9 mRadius of semicircle: r = ½sA = s² – ½πr²
⇔ A = s² – ½π(½s)²
⇔ A = s² – ½(¼πs²)
⇔ A = s² – (1/8)πs²
⇔ A = s²[1 – (1/8)π]
⇔ A = 9²[1 – (1/8)×3.14]
⇔ A = 81(1 – 0.3925)
⇔ A = 81(0.6075)
⇔ A = 49.2075 m²
Number 5
The area of that figure equals to the sum of the area of the right-angled triangle and the area of the semicircle.
Base of triangle: b = 8 mHeight of triangle: h = 6 mRadius of semicircle: r = (½×10) m = 5 mA = ½bh + ½πr²
⇔ A = ½(bh + πr²)
⇔ A = ½(8×6 + 3.14×5²)
⇔ A = ½(48 + 3.14×25)
⇔ A = ½(48 + 78.5)
⇔ A = ½(126.5)
⇔ A = 63.25 m²
KESIMPULAN/CONLUSION4. Area = 49.2075 m²
5. Area = 63.25 m²
10. Find the value of x in the figure below.
Jawaban:
Semoga membantu ya dek ^_^
11. In the figure below, the two triangles are similar. What is the value of x? *
5 : 6 = 11 : x
5x = 66
x = 66 : 5
x = 13,2
12. in the figure below,the value of x is.... cm
6 / 18 = x / x + 16
18x = 6x + 96
18x - 6x = 96
12x = 96
x = 96/12
x = 8
13. What is the length of the side labeled y cm?
Y = 15/9 × 12
= 180/9
= 20
(15/9 adalah perbandingan sisi segitiga besar dengan segitiga kecil)
Jawab:
20
Penjelasan dengan langkah-langkah
14. Name the height of the triangle in the figure below.
Yg loe maksut artiny?
Sebutkan/namakan tinggi dr segitiga digambar berikut.
---------------
askmeenglish (tanya gue Inggris!)
15. find the value of X in the figure below
Penjelasan dengan langkah-langkah:
180- (128+24) = 28derajat
16. Find the value of x in the figure below.
X + 12° + (180° - 43°) = 180°
x + 12° + 137° = 180°
x + 149° = 180°
x = 180° - 149°
X = 31°
Maaf klo ada yg salah
17. In the figure below, the value of x is..... cm
20
ok sorry salah
ok sorry salah
kalo benar follownyak
18. Three identical rectangles are put together to form rectangle ABCD as shownin the figure below. Given that the length of the shorter side of each of thesmaller rectangles is 5 feet, what is the urea in square feet of rectangle ABCD?8(A) 45(B) 73(C) 100(D) 125(E) 150
Jawaban:
(B)73 good morning dari indonesia
19. the length of 3 sides of a triangle are in the ratio 5 : 4 :7.the longest side measures 77 cm.the length of the shortest side of the triangle is...cm
Jawaban:
44 cm
Penjelasan dengan langkah-langkah:
panjang terpendek adalah
4/7 x 77
=4 x 11
= 44
20. A figure is made up of a rectangle and a semicircle as shown in the diagram below. what is the area of the figure?
Jawab:
Area itu bahasa inggris dari Luas, maka
Area of square = S x S
= 7 x 7
= 49 cm²
Radius = Diameter / 2
= 7 / 2
= 3.5 cm
Area of [tex]\frac{1}{2}[/tex] circle = [tex]\frac{1}{2}[/tex] x [tex]\pi[/tex] x r²
= [tex]\frac{1}{2}[/tex] x [tex]\frac{22}{7}[/tex] x 3.5²
= 19.25 cm²
Are of the figure = 49 + 19.25 = 68.25 cm²
Penjelasan:
phi [tex](\pi )[/tex] untuk [tex]\frac{22}{7}[/tex] digunakan apabila jari-jari/radius berkelipatan 7, sedangkan
phi untuk 3.14 digunakan apabila jari-jari/radius tidak berkelipatan 7
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