1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
s2008m [1.1K]
3 years ago
14

Um cone reto tem 24cm de altura e o raio da base é igual a 18cm. Calcule

Mathematics
1 answer:
tatyana61 [14]3 years ago
8 0
A)
A geratriz pode ser encontrada através dum teorema de Pitágoras. Tendo a altura e o raio, podemos chegar à medida da geratriz. Soma-se o quadrado da altura com o quadrado do raio para se obter o quadrado da geratriz. depois basta fazer a raíz quadrada do quadrado da geratriz para encontrar a medida da geratriz. 
\sqrt{24^{2}+ 18^{2} } = g ⇔ 30 = g
A medida da geratriz é 30cm

B)
A área total lateral é obtida multiplicando o raio pela geratriz e pelo π.
Área total lateral = r×g×π ⇔ Atl = 18cm×30cm×π ⇔ Atl ≈ 1696,5cm²

C)
A área total é calculada somando a área da base e a área lateral. A área da base é calculada multiplicando o quadrado do raio pelo π.
Área total ≈ 1696,5cm²+(18²cm×π) ≈ 1696,5cm²+1017,9cm² ≈ 2714,4cm²

O volume do cone é dado pela área da base vezes a altura a dividir por três.
Volume do cone = (área da base×altura do cone)÷3 ≈ (1017,9cm²×24cm)÷3 ≈ 24429,6cm³÷3 ≈ 8143,2cm³
You might be interested in
How many cubes of side 3 cm can be cut from a wooden solid cuboid with dimensions 12 cm x 12 cm x 9 cm?
Orlov [11]

Answer:

48 cubes can be cut from the wooden cuboid

Step-by-step explanation:

Total calculate this, we will first of all find the volume of the cuboid, and the volume of the cubes to be cut, then divide the volumes to see how many cubes can be cut from the cuboid.

Volume of cuboid = 12 × 12 × 9 = 1296 cm

volumes of each cube to be cut = 3 × 3 × 3 = 27 cm

Next, we will divide the volume of cuboid by the volume of the cubes:

Number of cubes = Volume of cuboid ÷ volume of cubes

Number of cubes = 1296 ÷ 27 = 48 cubes

Therefore, 48 cubes of sides 3cm can be cut from the wooden cuboid

5 0
3 years ago
What is 5/28 in it simplest form
Sergeu [11.5K]
5/28 is already in simplest form<span />
8 0
3 years ago
Find a solution to the linear equation y=2x+18 by filling in the boxes with a valid value of x and y. PLEASE REPLY SOON. I am do
ladessa [460]

Answer: (20)=2(1)+18 or (54)=2(18)+18

5 0
3 years ago
Lena found a 5/8 -carat diamond ring in the parking lot and turned it in to the police. Afterward, her friends discussed the wei
Phantasy [73]
The answer would be Naomi.
8 0
4 years ago
What is the equation of a line perpendicular to the line 7x+4y=15+2x and passes through the point (0.5,0.5)?
Rzqust [24]
4y=-5x+15
y=-5/4x+15/4
y-1/2=4/5(x-1/2)
y-1/2=4/5x-2/5
y-5/10=4/5x-4/10
y=4/5x+1/10
8 0
3 years ago
Other questions:
  • What is the value of x?<br>x = 32<br>x = 36<br>x = 37<br>(x + 15)<br>x<br>(4x - 2007<br>x = 40​
    5·1 answer
  • Find measure B ???????
    7·2 answers
  • In 1963, the United States Postal Service started using ZIP (Zone Improvement Plan) codes. Each ZIP code is a sequence of five d
    12·1 answer
  • What is 7909+1044 using algorithm
    6·1 answer
  • Please help me with those question please help with out number 1
    5·2 answers
  • Assume that 200 babies are born to 200 couples treated with the XSORT method of gender selection that is claimed to make girls m
    7·1 answer
  • When you buy something with a credit card, which one of the following will usually save you money over the long run? A. Paying t
    9·1 answer
  • The number of eggs in the refrigerator e decreased by 8 equals 17.
    6·1 answer
  • Please help me im in deep need
    8·1 answer
  • A rectangular playground has a width of 540
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!