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
sergejj [24]
3 years ago
9

Please help im so confused!!??

Mathematics
1 answer:
victus00 [196]3 years ago
8 0
The formula for the surface area of a cone is SA=(pi)(r^2)+(pi)(r)(l)

L is the slant height of the cone.
Because pi is in the answer choices, there is no need to multiply either by pi so the new formula becomes
SA=r^2+(r)(l)
Now you just plug in what you know
Sa=(8^2) + (8)(15)
Sa=64+120
Sa=184(pi)

*dont forget to put the pi back in since you took it out in the beginning of the equation*

Your answer is A.

Hope this helps :)
You might be interested in
At 5.45p.M .,lixin,khairul and Devil are at the starting point of a 1-km circular path. Lixin Takes 18 minutes to walk one round
sweet [91]

Answer:

Meeting\ Time = 6:03\ pm

Step-by-step explanation:

Given

Start\ Time= 5:45pm

Lixin = 18\ min/round

Khairul = 360\ seconds/round

Devi = 4minutes/2\ rounds

Required

Determine their next meeting time

First, we need to get their unit rate in minutes per round

Lixin = 18\ min/round

Khairul = 360\ seconds/round

Convert 360 seconds to minutes

Khairul = \frac{360}{60} min/round

Khairul = 6 min/round

Devi = 4minutes/2\ rounds

Divide by 2/2

Devi = 2mins/round

So, we have:

Lixin = 18\ min/round

Khairul = 6 min/round

Devi = 2mins/round

Next, is to determine the LCM of 18, 6 and 2

18=2 * 3 * 3

6 = 2 * 3

3 = 3

Their LCM is:

LCM = 2 * 3 * 3

LCM = 18

This means that they will meet 18 minutes after their initial time of departure.

So:

Meeting\ Time = 5:45\ pm + 18\ minutes

Meeting\ Time = 6:03\ pm

3 0
3 years ago
Let f(x)=cos(x)x^-2<br> F’(x)=
kondaur [170]

f(x)=cos(x)x^{-2}\implies f(x)=\cfrac{cos(x)}{x^2}\implies \cfrac{df}{dx}=\stackrel{\textit{quotient rule}}{\cfrac{-sin(x)\cdot x^2-cos(x)\cdot 2x}{(x^2)^2}} \\\\\\ \cfrac{df}{dx}=\cfrac{-x[x\cdot sin(x)+2cos(x)]}{x^4}\implies \cfrac{df}{dx}=\cfrac{-[xsin(x)+2cos(x)]}{x^3}

8 0
2 years ago
How do I write this fraction as a decimal 14 3/5
Softa [21]

we have

14 \frac{3}{5}

This is a mixed number

we know that

A mixed number is a combination of a whole number and a fraction.

So

14 \frac{3}{5} is equal to

14 +\frac{3}{5}

where

14 is the whole number

\frac{3}{5} is the fraction

\frac{3}{5}=0.60

14 +\frac{3}{5} =14+0.60\\ \\ =14.60

therefore

the answer is

14.60

3 0
3 years ago
Read 2 more answers
Ben wanted to run with his dad during a race. His dad was running a marathon, which has a distance of 26.2 miles. Ben's goal was
Aneli [31]
The answer in is 4.4 bc 1/3 of 13.1(which is half of the total distance) is 4.4
6 0
3 years ago
PLEASE HELP ASAP!!
SpyIntel [72]
C. 0 _________________
7 0
3 years ago
Other questions:
  • I'm stuck on a MathsWatch question. I've started it but I need some help to finish it please. Thank you! It's out of 5 marks, so
    11·1 answer
  • Select the type of equations Consistent Equivalent Inconsistent
    14·1 answer
  • The height of a painting is √30 ft. Between which two consecutive whole numbers is √30? 7 and 8 6 and 7 4 and 5 5 and 6
    6·1 answer
  • PLZ HELP I NEED TO TURN THIS IN IN 10 mins
    15·2 answers
  • Please help i m gonna give brainlest
    10·1 answer
  • Complete the process of solving the equation.
    8·1 answer
  • Help me please. I'm very bad at math and Need help
    6·2 answers
  • Which unit price is lower, $4.50 per half pint or $44 per gallon
    8·2 answers
  • Given: 9x &gt; -36. Choose the solution set. {x | x &lt; -4} {x | x &lt; 4} {x | x &gt; 4} {x | x &gt; -4}
    15·2 answers
  • What is the composition f(g(x))iff(x) = 5x and g(x) = 2x – 1.?10x - 1
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!