find the circumference of a circle with radius (a).30 cm (b).100cm
1. find the circumference of a circle with radius (a).30 cm (b).100cm
Jawab:
a. 188,5 cm
b. 628,3 cm
Penjelasan dengan langkah-langkah:
Circumference = 2 × π × radius
a. 2 × π × 30 cm = 188,5 cm
b. 2 × π × 100 cm = 628,3 cm
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2. The circumference of circle is 248 a. circle radius b. area of the circle
Diketahui:
The circumference of ⭕ = 248Ditanya:
➊ The circle radius? ➋ Area of the circle?Jawab:
➊ A circle radius[tex]Circumference = \pi \times diameter \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ 248 = 3,14 \times diameter \\ diameter= \frac{248}{3,14} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ diameter = 78,98 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ diameter = 79 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ radius = 79 \div 2 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ radius = \boxed{39,5} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]
So, the circle radius is [tex] \boxed{39,5} [/tex]➋ Area of the circle[tex]= \pi \times {r}^{2} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ = 3,14 \times {39,5}^{2} \: \: \: \: \: \: \: \\ = 3,14 \times 1.560,25 \\ = 4.899,185 \: \: \: \: \: \: \: \: \: \: \: \: \: \\ = \boxed{4.899,2} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]
So, area of the circle is [tex] \boxed{4.899,2} [/tex]☻ stay healthy ☻
3. A circle has a radius of 10,5 meter. The circumference of the circle is
66 m
Penjelasan dengan langkah-langkah:
r = 10,5 m
d = 10,5 x 2 = 21 m
K = πd
= 22/7 x 21 m
= 66 m
4. A circle has a circumference of 88cm .What is the diameter of the circle
Sebuah lingkaran memiliki keliling 88 cm. Berapa diameter lingkaran tersebut?
Dik : K = 88 cm
Dit : d......?
PENJELASAN:
d = 2 × π × r
= 2 × 3,14 × 88
= 2 × 276,32
= 552,64
5. taking π = 22per7, find the circumference of a circle of : a. Diameter 28 cm. b. Radius 14 cm . tolong pakai caraaaaaa
DiketahuiDiameter d = 28cmDitanyaKeliling kDijawabk = π × dk = 22/7 × 28k = 22 × 8k = 176cm²
An—
6. The circumference of a circle that has a radius of 15 cm is... (3.14)
K=2πr
K=2*3,14*15
K=30*3,14
K=94.2
7. Taking π = 22per7 , find the circumference of a circle of : a radius 14 cm tolong pqkqi caraaaaa.
Penjelasan dengan langkah-langkah:
circumference = 2 x π x r
just times it all
8. 2 9. The radius of a circle is 21 cm. Find the circumference of the circle in terms of t?
The circumference of the circle is 132 cm
Step by stepCircumference of the circle
= 2 × π × r
= 2 × 22/7 × 21
= 2 × 22 × 3
= 132 cm
Jawab:
Penjelasan dengan langkah-langkah:
radius(jari-jari)=21cm
cicumfence(keliling)=?
C=2xπxr
C=2x22/7x21
C=132cm
the cicumfence is 132cm
9. The radius of circle with circumference 37,68cm is.......(use n=3,14
37,68 cm = 3,14 x 2 x radius
37,68 cm = 6,28 x radius
37,68 : 6,28 = radius
6 cm = radius
10. Taking π = 22per7 , find the circumference of a circle of : a radius 14 cm tolong pqkqi caraaaaa.
Jawaban:
Today: Friday, 05th Feb 2021
06.01 PM
_______________________
π = 22/7
r = 14 cm
Circumference of circle = keliling lingkaran
C = 2 × π × r
C = 2 × 22/7 × 14
C = 2 × 22 × 2
C = 88 cm
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Semoga Bermanfaat Ya ^^
11. The radius of circle with circumference 37,68 cm is ... (use = 3,14)
circumference = keliling lingkaran = 37,68 cm
circumference = π . d
37,68 cm = 3,14 . d
d = 37,68 : 3,14
d = 12 cm
r = 6 cmk = 2 × π × r
37,68 = 2 × 3,14 × r
37,68 = 62,8 × r
r = 37,68 : 62,8
r = 6
12. if the radius of the circle is 25 cm, what is the circumference of the circle?
ANSWER BY : Rivtno___________________Radius = Half of diameter = 25Circumference Of the circle formula =2πr
JAWAB =2πr
=2×3,14×25
=6,28×25
=157CM
SEMOGA BERMANFAAT
13. A circle has an area of M cm2 and a circumference of N cm.if m/n=20,then the radius of circle is cm
Sebuah lingkaran memiliki Arean dari M cm2 dan lingkar N cm. jika m / n = 20, maka jari-jari lingkaran adalah cm
itu artinya
14. the radius of circle with circumference 37,68 cm is .... terimakasih
keliling = 2.phi.r
37,68 = 2 . 3,14 . r
r = 37,68:(2.3,14)
r = 6 cm
15. a circle has a radius of 22 cm. the circumference of the circle is
Jawaban:
artinya
sebuah lingkaran memiliki jari-jari 22 cm. keliling lingkaran tersebut
Penjelasan:
maaf kalo salah
16. suppose the radius of a circle is 8units. what is its circumference
Circle
Solve for circumference
C≈50.27
Have a nice day ✨
17. 1.The diameter of a circle is 20 m, so the radius is .. 2.The circumference of a circle with the diameter of 14 cm is .... 3.The circumference of a semi circle with the diameter of 14 cm is .... 4.The radius of a circle is 28 cm. The area of a quadrant is ...
Jawab:
1. 10 m
2. 44 cm
3. 36 cm
4. 154 cm²
Penjelasan dengan langkah-langkah:
1. Radius = half diameter = 20 /2 = 10 m
2. Circumference = 2 x 22/7 x 7 cm = 44 cm
3. Circumference = diameter + half circumference = 14 + 22/7 x 7 = 36 cm
4. Area quadrant = 1/4 x 22/7 x 14 x 14 = 154 cm²
18. Find the following. (Use t = 3,14)a The radius of the circle with a diameter of 125 cm.b The area of the circle with a radius of 10,5 cm.c The circumference of the circle with a diameter of 144 cm.PLS BANTU PLS
Jawaban:
A. 10,5 cm
B. 347.,28 cm²
C. 452,16 cm
Penjelasan dengan langkah-langkah:
Point A.
Diameter 125 cm,
[tex]d = 2r \\ 125 = 2r \\ r = \frac{125}{2} \\ = 62.5 \: cm[/tex]
Point B
r = 10.5 cm
[tex]a = \pi {r}^{2} \\ = 3.14 \times 10.5 \times 10.5 \\ = 347.28 \: {cm}^{2} [/tex]
Point C.
d = 144 cm,
[tex]c = \pi .d \\ = 3.14 \times 144 \\ = 452.16 \: cm[/tex]
19. Quizz EasyA circle has a radius of 7 cm. Then the circumference of the circle is ...Note:Good Luck Everyone
K = 2 × phi × r
K = 2 × 22/7 × 7
K = 2 × 22
K = 22 + 22
K = 44
__
Jadi, Keliling lingkaran tersebut adalah 44
__
✿ Penyelesaian ✿K = 2 × Phi × r
K = 2 × 22/7 × 7
K = 2 × 22
K = 22 + 22
K = 44
✿ Kesimpulan ✿
Keliling Lingkaran Tersebut Adalah 44 cm
Semoga Membantu ツ !
20. A circle has a diameter of 28 cm, calculate the circumference of the circle?
Jawaban:
22/7 x 14x14
=616cm
.......
Short Answer :Circumference of the circle = 88 cmLongAnswer :
Diameter = 28 cm
Radius = Half of Diameter = 14 cm
Circumference of the circle Formula : [tex]2\pi r[/tex]
Steps :
Insert the formula
= 2 π r
Substitute
= 2 x 22/7 x 14
= 4 x 22
= 88 cm
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