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
lianna [129]
2 years ago
15

A right cone has a radius of 13 cm and a slant height of 20 cm. Find its surface area.

Mathematics
1 answer:
devlian [24]2 years ago
5 0

Answer:

A=1347.7\ cm^2

Step-by-step explanation:

Given that,

Radius of a cone, r = 13 cm

Slant height of the cone, l = 20 cm

We need to find the surface area of the cone. The formula for the surface area of the cone is given by :

A=\pi rl +\pi r^2

Put all the values,

A=\pi r(l + r)\\\\A=\pi \times 13(20 + 13)\\\\A=1347.7\ cm^2

So, the surface area of the cone is 1347.7\ cm^2.

You might be interested in
(40 points + Brainliest for right answer).
exis [7]
The correct answer is C
8 0
3 years ago
The sample variance of hourly wages was 10. what is the sample standard deviation?
lapo4ka [179]
<span>Standard deviation is defined as the quantity which expresses by how much the members of a group is different from the mean value for the group.
</span>
The sample standard deviation with a <span>sample variance of hourly wages 10 will be $3.16.

Explanation:

</span><span>The standard deviation is the square root of the variance.
Therefore,
The square root of 10 dollars can be calculated as:

 </span>√10 = $3.16
8 0
3 years ago
PLEASE HELP!!!!!!!! IMAGE ATTACHED!!!!
erma4kov [3.2K]

Answer:

Step-by-step explanation:

4) (-2,3)   ;  (-1,-2)

Slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\=\frac{-2-3}{-1-[-2]}\\\\=\frac{-5}{-1+2}\\\\=\frac{-5}{1}\\\\=-5

5) line is parallel to x-axis. So, slope= 0

6) (1,1) ;  (-2, -1)

Slope=\frac{-1-1}{-2-1}\\\\=\frac{-2}{-3}\\\\=\frac{2}{3}

6 0
3 years ago
Which product is positive?<br> ( 13 ( 31 )<br> ( 31 )<br> (3) ( 13 (1)
Anastaziya [24]
The first one because it’s (13(31)
8 0
3 years ago
Justin cuts a 10-inch-long roll of cookie dough into 6 equal-length pieces. How many inches long is each piece of cookie dough?
mixas84 [53]

Answer: Each piece is 1 2/3 inch length.

Step-by-step explanation:

Total length of cookie dough =10-inch

Since it is being into divided  into 6 equal-length pieces

We have that each piece will have=1 0-inch / 6 = 5/3 = 1 2/3 inch length.

6 0
3 years ago
Other questions:
  • Given a polynomial function f(x), describe the effects on the y-intercept, regions where the graph is increasing and decreasing,
    6·2 answers
  • A squirrel runs 23 feet down a hill to eat an acorn. Then it runs 23 feet up the hill. Write the integer that represents the squ
    15·2 answers
  • There is a daily fee for renting a moving truck, plus a charge of $0.50 per mile driven. If driven 48 miles, it costs $64 to ren
    9·2 answers
  • Which of the following is a true statement? a) The coefficient of determination can assume negative values. b) A negative correl
    10·1 answer
  • What is the answer to x+1/2=5
    14·2 answers
  • Can somebody please give me the volume to the following measurements length=8cm
    6·1 answer
  • Emily is training for a 10K race. On day one, she runs for 20 minutes. On day two, she runs for 30 minutes. On day three, she ru
    14·1 answer
  • Select the correct answer from the drop-down menu. Find the trinomial. (22-6) and (22+4) are the factors of​
    7·1 answer
  • A customer has a credit card that charges 18% simple interest every year. How much interest will the customer save
    10·1 answer
  • Pls help me I’m stuck
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!