A cone has a height of 8.4cm. Given that the cone has a vertical angle of 72, find the diameter of the circular base
1. A cone has a height of 8.4cm. Given that the cone has a vertical angle of 72, find the diameter of the circular base
R = h / tan 72 = 8,4 / tan 72 = 2,72 cm
D = 2R = 5,44 cm
2. A container in the shape of a hollow cone of semi vertical angle 30
Jawab:
Step-by-step explanation:
I hope that is helpful for you
3. A container in the shape of a hollow cone of semi-vertical angle 30 is held with its vertex pointing downwards. Water is poured into the cone at rate of 70cm s.find the rate at which the depth of water in the cone is increasing when the depth of the water is 9 cm
Jawaban:
☺☺
Penjelasan dengan langkah-langkah:
ga ngerti? coba pake b indo
4. NOT TO SCALE 58 m In the diagram, BC is a vertical wall standing on horizontal ground AB D is the point on AB where AD 58 m. The angle of elevation of from A is 26°. The angle of elevation of from D is 720 (n) Show that AC 76.7 m, connect to I decimal place, [3] (b) Calculate BD [5]
yaua jabusisa duisinwa dibna1
5. The shape of the hat is like ....a circle and cubeb. circle and semi circlec. semi circle and coned. circle and cone
Jawaban:
Bentuk topinya seperti ....
a.lingkaran dan kubus
b. lingkaran dan setengah lingkaran
c. setengah lingkaran dan kerucut
d. lingkaran dan kerucut
Penjelasan:
JADIJAWABANNYAYGC
Jawaban:
kyanya sih D. Circle and cone
Penjelasan:
Semoga membantu6. A solid metal sphere of surface area 394,24 cm2 is melted down and recast as a solid circular cone of height 5.6 cm. find the base radius of the cone.
Jawaban:
the working and the answer are shown in the pic.
semangat belajar....
7. A cone of base radius 5 cm and height 12 cm is placedover a solid rubber ball. The fit is 'perfect, so the conetouches the floor and the ball touches the cone.Find the radius of the ball.Hint:Show that triangles ABY and AXC are similar.
Arti:Sebuah kerucut dengan radius alas 5 cm dan tinggi 12 cm ditempatkan
di atas bola karet padat. Pasnya 'sempurna, jadi kerucutnya
menyentuh lantai dan bola menyentuh kerucut.
Temukan jari-jari bola.
Petunjuk:
Tunjukkan bahwa segitiga ABY dan AXC serupa.
follow akun saya nanti di folback
8. 15. circular cone has a height of 17 mm and a slantheight of 21 mm. Find(i) the volume(ii) the total surface area,of the cone.
15.kerucut bundar memiliki tinggi 17 cm dan tinggi miring 21 cm. temukan volume total luas permukaan kerucut.
jadikan yang terbaik☺️
9. A cone has a circular base of radius 9 cm and a slant height of 5 cm. find the total surface area of the cone.
Volume = πr²t/3
= 3,14 x 9² x 5/3
= 3,14 x 27 x 5
= 3,14 x 135
= 423,9 cm³
10. The volume of a cone with a circular base of radius 6 m is 84πm3. find it's height.
itu ya maaf kalo salah
11. The volume of a cone with a circular base of radius 8 cm is 3207 cm. Find its height.
Penjelasan dengan langkah-langkah:
V = ⅓πr²t
t = (3 x 3207)/(3,14 x 8²)
t = 9.621/200,96
t = 47⅞ cm
12. Characteristic of right angle
An acute angle is one which has a degree measurement greater than 0° but less than 90°. A right angle has a 90° angle measurement. An obtuse angle has a measurement greater than 90° but less than 180°, and a straight angle, which looks like a straight line, has a 180° angle measurement.
Two angles are known as congruent angles if they have the same measurement. If their sum is 90°, then they are said to be complementary angles. If their sum is 180°, they are supplementary angles. Angles can be bisected (divided in half) or trisected (divided in thirds) by rays protruding from the vertex.
When two lines intersect, they form four angles. The angles directly across from each other are known as vertical angles and are congruent. The neighboring angles are called adjacent because they share a common side. If the lines intersect such that each angle measures 90°, the lines are then considered perpendicular or orthogonal.
In addition to size, angles also have trigonometric values associated with them such as sine, cosine, and tangent. These values relate the size of an angle to a given length of its sides. These values are particularly important in areas such as navigation, astronomy, and architecture.
13. terjemahkan : set your bristles at the gum line at a 45-degree angle. gently brush with a short, vertical or circular motion. Don't brush across your teeth
mengatur bulu di garis gusi pada sudut 45 derajat . sikat lembut dengan gerakan pendek , vertikal atau melingkar . Jangan menggosok seluruh gigi Anda
14. Characteristics of right angle
it's angle equal to 90°
15. A cone has a circular base of radius 8 cm and height of 17 cm. Find the volume of the cone.
r = 8 cm
t = 17 cm
Volume
= 1/3 . π. r². t
= 1/3 . 3,14 . 8² . 17
= 1/3 . 3,14 . 64 . 17
= 1.138,77 cm³
16. An angle measures 2:3 of its complement .the measure of that angle
The measure of angle is 2/3 x 90° = 60°
17. Given measure of an angle is 2/3 of it's complimentary angle. The measure of that angle is
Let [tex]\alpha[/tex] be an angle so that [tex]\beta[/tex] is its complementary angle.
We know that:
[tex]\alpha + \beta = 90^o[/tex]
Plugging in [tex]\alpha = \frac{2}{3} \beta[/tex] we get:
[tex]\frac{2}{3} \beta + \beta = 90^o \\ \frac{5}{3}\beta = 90^o \\ \beta = 54^o[/tex]
So our final answer is:
[tex]\alpha = \frac{2}{3}\beta = \frac{2}{3}(54^o) = 36^o[/tex]
18. 1. The volume of a cone with a circular base of radius 8 cm is 320π cm³. Find its height.
Jawaban:
4
Penjelasan dengan langkah-langkah:
circular base of radius 8cm is 320
320/8=4 cm
19. A solid cone has a circular top of radius 5 cm and a slant height of 8 cm. Calculate its total surface area
Jawaban:
[tex]23 \frac{5}{7} \: {cm}^{2} [/tex]
Penjelasan dengan langkah-langkah:
[tex]lp \: kerucut \: = \: \pi r \: ( \: r + s) \\ \\ = \: \frac{22}{7} \times ( \: 5 \: {cm}^{2} + \: 8 \: {cm}^{2} ) \: \\ \\ = 23 \: \frac{5}{7} \: {cm}^{2} [/tex]
maaf kalo salah :')20. set your bristles at the gum line at a 45-degree angle. Gently brush with a short, vertical or circular motion. Don't brush across your teeth
Mungkin : "tempelkan sikat pada batas gusi pada sudut 45 derajat. Perlahan sikatlah secara pendek, vertikal, atau pola melingkar. Jangan sikat tepi gigimu." Ceoet pinter.
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