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
notka56 [123]
2 years ago
9

Use a net to find the surface area of the cone to the nearest square centimeter. Use 3.14 for л. The surface area of the cone is

about cm². (Round to the nearest whole number as needed.) 19 cm 4 cm (The figure is not drawn to scale.)​
Mathematics
2 answers:
SashulF [63]2 years ago
8 0

The surface area of the cone rounded to the nearest whole number is; 346 cm²

<h3>How to determine the cone surface area?</h3>

We are given the parameters:

Radius; r = 5 cm

Slant height; l = 17 cm

The surface area is gotten from the formula;

A = πr(r +l)

Plug in the relevant values to get;

A = 3.14 × 5 × (5 + 17)

A = 345.5 square centimeters

Approximating to a whole number gives;

A = 346 square centimeters

Thus, the surface area of the cone is 346 square centimeters

Read more about surface area of cone at; brainly.com/question/6613758

#SPJ1

drek231 [11]2 years ago
3 0

Answer:

  289 cm²

Step-by-step explanation:

The net for the surface area of a cone is a circular sector representing the lateral area, together with a circle representing the area of the base. The arc length of the sector is equal to the circumference of the base.

__

<h3>base area</h3>

The area of the circular base is given by the area formula for a circle:

  A = πr²

For the given radius, the area is ...

  A = (3.14)(4 cm)² = 50.24 cm²

<h3>lateral area</h3>

The circumference of the circular base is ...

  C = 2πr = 2(3.14)(4 cm) = 25.12 cm . . . . also the arc length of the sector

The area of the sector is ...

  A = 1/2hs . . . . where h is the radius of the sector, and s is its arc length

  A = (1/2)(19 cm)(25.12 cm) = 238.64 cm²

<h3>total surface area</h3>

The total surface area is the sum of the base area and the lateral area:

  SA = 50.24 cm² +238.64 cm² = 288.88 cm² ≈ 289 cm²

The surface area of the cone is about 289 cm².

You might be interested in
25 POINTS SOMEONE HELP ME OUT WITH THIS PLEASEEEE BRAINLIEST ANSWER
zloy xaker [14]
1. y=7x-1

2. y=3x+b
   <u> </u><u>Sub (1, -5) into equation to find '</u><em><u>b'</u></em><u />
   -5=3(1)+b
   -8=b

   y=3x-8 

3. x=-7

4. y=4
3 0
3 years ago
4x + 2(x + 8) = -19+ x
Likurg_2 [28]

4x + 2(x + 8) = -19 + x

4x + 2x + 16 = -19 + x

6x + 16 = -19 + x

6x + 35 = x

-5x = 35

x = -7

6 0
3 years ago
Read 2 more answers
2x = 4y + 8, x - 2y = 4
Evgen [1.6K]

Answer: x = 8, y = 2, coordinates (8,2)

Step-by-step explanation:

2x = 4y + 8 (divide by 2 to get value of x)

x = 2y + 4

(now substitute x into the second equation to find value of y)

2y + 4 - 2y = 4

2y - 2y = 4 - 4 (divide by 2 to get value of y)

y - y = 2 - 2

y = 2

Now plug in value of "y" to get value of "x".

x - 2(2) = 4

x - 4 = 4

x = 8

Coordinates (8,2)

3 0
3 years ago
CAN SOMEONE PLS HELP ME I WILL MARK U BRAINLIEST
sukhopar [10]

Answer:

x \geqslant  1

Step-by-step explanation:

The expression in the square root should be greater than or equal to zero, because square root of a negative number does not give a real number.

x  - 1 \geqslant 0 \\ x \geqslant  1

6 0
2 years ago
Read 2 more answers
Steve opened a bank account.he plans to deposit $35 every month.write an equation that models the total amount of money,t,deposi
zimovet [89]
35m because 35 dollars multiplied by m months
7 0
3 years ago
Other questions:
  • A heptagon can be divided into how many triangles by drawing all of the diagonals from one vertex?
    9·2 answers
  • A copy machine makes 32 copies per minute. How long does it take to make 120 copies?
    11·2 answers
  • B+0.10b equivalent expression
    12·1 answer
  • Michelle has a 1 2/3 pound box of cereal. She wants to make equal servings that completely use all of the cereal. Which of these
    11·1 answer
  • I WILL GIVE YOU ALL MY PIONTS PLUS BRAINLIESTTT PLEASEEEEEE
    6·1 answer
  • The links of the sides of a triangle are given determine if the triangle is a right triangle if it is identify the hypotenuse
    10·1 answer
  • If john has 5 apples and his friend takes 2 how many are left?
    5·2 answers
  • Select the correct answer. The Red Sea is widening at a rate of 1.25 centimeters per year. How many years will it take to widen
    11·2 answers
  • A die is rolled 200 times with the following results.
    10·2 answers
  • I am on my trigonometry unit in math and don’t know what to do for this. I also really need work shown!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!