The circular portions of the following figures are semicircles. Find the perimeter and area of each of the following figures.
1. The circular portions of the following figures are semicircles. Find the perimeter and area of each of the following figures.
Penjelasan dengan langkah-langkah:
(a)
Luas = 3x5/2 + 3,14 x 2²/2 = 7,5 + 6,28 = 13,78 m²
Keliling = 3+5 + 3,14x2 = 8 + 6,28 = 14,28 m
(b) Luas = 3,14 x 9/2 + 3,14 x 4,5
= 3,14 x 9 = 28,26 cm²
Keliling = 3,14 x 18/2 + 3,14 x 9
= 3,14 x 18
= 56,52 cm
Penjelasan dengan langkah-langkah:
a.
Luas = 3 × 5/2 + 3,14 × 2²/2 = 7,5 + 6,28 = 13,78 m²
keliling = 3 + 5 + 3,14 × 2 = 8 + 6,28 = 14,28 m
b.
Luas = 3,14 × 9/2 + 3,14 × 4,5 = 3,14 × 9 = 28,26 m²
keliling = 3,14 × 18/2 + 3,14 × 9 = 3,14 × 18 = 56,52 cm
2. The two following figures are equivalent to fraction....
Jawaban:
2 bilangan berikut yang setara dengan pecahan adalah ?
2/4 dan 3/6
jadi jawaban ny "="
sama dengn karna hasil ny jika dibagi sama sama 0,5
3. When the value of a number is given, the significant figures provide an indication of theuncertainty in the value; for example, a value of 2.7 indicates that the number lies between2.65 and 2.75. Give ranges within which each of the following values lie.
design ......... ........
4. Find the values of the unknown in each of the following figures:
Jawaban:
segitiga bca = segitiga sama kaki
jika sudut B= 27° maka sudut A= 27°
sehingga sudut C= 180°- 27°-27°=126°
sudutACD=180°-126°=54°
Penjelasan dengan langkah-langkah:
semoga membantu :)
5. What are the definition of the following figures of speech?:a. hyperboleb. metaphor
Jawaban:
Hyperbole are a figure of speech which is extremely exaggerated to make things bigger and more than before
Metaphor are a figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable.
6. Find the value of the unknown variable/s in each the following figures.
semoga membantu
maaf kalau salah
7. The circular positions of the following figures are semicircles.for each of the following figures find its perimetere and area kerjain A,B,and C
Penjelasan dengan langkah-langkah:
a)
keliling lingkaran =
[tex]2 \pi r[/tex]
[tex] = 2 \times \frac{22}{7} \times \frac{21}{2} \\ = 66[/tex]
kelililig total = 66 + 2×(36-21)
= 66 + 30 = 96cm
parimeter = 96 cm
luas = luas lingkaran + luas persegi
[tex] = \frac{22}{7} \times {21}^{2} + {(36 - 21)}^{2} \\ = 1386 + 225 \\ = 1611[/tex]
luas = 1611 cm^2
area = 1611 cm^2
a aja ya....
8. write the result according to the rule of significant figures a) 15.45 + 17.3669 = …. b) 2.560 x 0.203 = …
Jawaban:
a) 32.8169
b) 0.51968
maafkalo salah
9. Find the unknown side of each of the following triangles, given that the measurements are in cm.
Find the unknown side of each of the following
triangles, given that the measurements are in cm ?
Aku gak bisa ngejawab
Semoga yang lain bisa menjawab dengan betul betul betul...
10. For each of the following figures, find the area of the blue region(s).
c. 45 cm²
d. 150,96 cm²
Penjelasan dengan langkah-langkah:
c. L = L.trapesium - L.segitiga
= 1/2 x (9+17) x 12 - 1/2 x 17 x 6
= 1/2 x 16 x 12 - 51
= 96 - 51
= 45 cm²
d. L = L.jajaran genjang - L.lingkaran
= 12 x 22 - 3,14 x 6 x 6
= 264 - 113,04
= 150,96 cm²
11. Write examples of the following figures of speech! a. Hyperbole b.Simile C. Metaphor
Jawaban:
a. Hyperbole
1. He is running faster than the wind
2. That man is taller than a tree
3. This is the worst day of my lufe
b. Simile
1. This house is as clean as a whistle.
2. He is as strong as an ox.
3. He is as loud as an cricket
c. Metaphor
1. Her long hair was a flowing golden river.
2. kisses are the flowers of affection
3. The calm lake was a mirror
12. Which of the sentence below contains the topic of the text?
yg mana Kalimat dibawah ini yg terkandung dalam topik teks tsbWhere is it? I don't see anything unless you had the picture
13. in each of the following figures ab//cd.Find the values(s) of the unknown(s)
(a). b? a?
Segitiga memiliki total 180°, karena itu:
180°-(30+38) = 180-68 = 112°
4b = 360°-(112×2) = 360-224 = 136°
b = 34°
a = 180 - 38 = 142°
(b). d? c?
140° = 7c
20° = c
2d = 7c = 140°
d = 70°
(c). e?
7e + 3e = 180° = 10e
e = 18°
(d). f?
2f+6 = 3f-23
-f = -29
f = 29°
14. find the value of the unknown in each of the following figures
b). Besarnya sudut segitiga sama kaki 180°
maka,
<a + <b + <c = 180°
68° + 64° + 2b° = 180°
132° + 2b° = 180°
2b = 180° - 132°
2b = 48°
b = 24°
d). <ABC = 180°
maka,
<a + <b + <c = 180°
3d° + 4d° + d° = 180°
8d° = 180°
d = 180° / 8°
d = 22,5°
f).<ABC = 180°
maka,
<a + <b + <c = 180°
f° + f° + f° = 180°
3f° = 180°
f = 180°/3°
f = 60°
15. For each following figures,find the total area of shaded regions
Area of shaded egions
= 1/2 area of circle - ( area of triangle + rectangle)
Dari gambar diketahui jari jari = 13,6 cm karena garisnya sampai titik pusat dan diameter = 27,2.
Maka
[tex]a = 3.14 \times 13.6 {}^{2} - ( \frac{1}{2} \times 27.2 \times 13.6\: + 16 \times 11) \\ a = 580.744 - (184.96 + 176) \\ a = 580.744 - 360.96 \\ a = 219.784 \: cm {}^{2} [/tex]
16. find the value of the unknown in each of the following figures. plis help part b.
Jawab:
sudut A = 108°
Sudut B = 144°
Penjelasan dengan langkah-langkah:
Rumus menghitung Jumlah derajat dari sudut bangunan
(n-2) x 180°
dengan n = jumlah sisi
diketahui gambar tersebut merupakan heksagon (6 sisi)
berarti jumlah sudutnya adalah (6-2) x 180 = 4 x 180 = 720°
122 + 128 + 114 + 104 + 3b + 4b = 720
468 + 7b = 720
7b = 252
b = 36
maka sudut A = 3 x (36) = 108°
sudut B = 4 x (36) = 144°
CMIIW
17. Complete the following dialogis using expressions which contains so , that , or such...
Jawaban:
1. yes, why?
2. thats unfortunate, what kind of injuries he got?
3. damaged, that his face is destroyed
18. Solve the following equations, giving your answers correct to 3 significant figures where necessary. bantu yaaa
[tex] \frac{3}{x - 1} - \frac{2x + 10}{x {}^{2} + 2x - 3 } = \frac{1}{3} \\ \frac{3(x + 3)}{x - 1(x + 3)} - \frac{2x + 10}{x {}^{2} + 2x - 3 } = \frac{1}{3} \\ \frac{3x + 9 - (2x + 10)}{x {}^{2} + 2x - 3 } = \frac{1}{3} \\ \frac{3x + 9 - 2x - 10}{x {}^{2} + 2x - 3 } = \frac{1}{3} \\ \frac{x - 1}{x {}^{2} + 2x - 3} = \frac{1}{3} \\ 3(x - 1) = x {}^{2} + 2x - 3 \\ 3x - 3 = x {}^{2} + 2x - 3 \\ x {}^{2} + 2x - 3x - 3 + 3 = 0 \\ x { }^{2} - x = 0 \\ x(x - 1) = 0 \\ x = 0 \: atau \: x = 1[/tex]
19. Find the value of the unknown in each of the following figures
mboh aku gk ngerti ju woyyyyyy
20. Find the area and perimeter of each of the following figures.8 m
Jawab:
Penjelasan dengan langkah-langkah:
Luas persegi = sisi x sisi
= 8 x 8 =64
Keliling persegi = 4 Sisi = 4 x 8 = 32
Jawab:
64 cm^2
32 cm
Penjelasan dengan langkah-langkah:
Dik : S = 8 m
Dit : berapa luas dan keliling?
Jawab :
L = s × s
= 8 × 8
= 64 cm^2
K = 4 × s
= 4 × 8
= 32 cm
semoga membantu ^^
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