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
ZanzabumX [31]
1 year ago
6

A cone of height 9cm has a volume of ncm³ curved surface area of ncm². Find the vertical angle of the cone

Mathematics
1 answer:
avanturin [10]1 year ago
5 0

Answer:

Step-by-step explanation:

let the radius be r and the slant height be L

then first of all: L^2 = r^2 + 9^2

= r^2 + 81

Surface area = πrL = n

volume = (1/3)πr^2 (9) = 3πr^2 = n

then 3πr^2 = πrL

3r = L , then in L^2 = r^2 + 81

9r^2 = r^2 + 81

8r^2 = 81

r = 9/√8

L^2 = 81/8 + 81 = 729/8

L = √1458/4

cos(baseangle) = (9/√8) / (√1458/4)

= 1/3

angle of base = appr 70.5°

check my arithmetic

You might be interested in
Helppppppppppppppp lol
Sladkaya [172]
The given expression is: 
(x/2) + 5

Let's look at each terms separately:
x/2 means that you you're getting half the value of a number
+5 means that you are adding 5
Combining both, you can conclude that you are adding 5 to half a certain given number.

Comparing this with the choices, the correct choice would be:
C. five more than half a number.

5 0
3 years ago
Read 2 more answers
I NEED HELP WITH THIS HELP PLS!!!!
motikmotik

Answer:

120

Step-by-step explanation:

Volume =lxbxh

=5 x 6 x 4

=120

4 0
2 years ago
Help mehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
Vanyuwa [196]

Answer:

y = 65x

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
PLEASE HELP!! ASAP!!!!!
Dovator [93]

The linear function with the same y-intercept with the graphed function is: table A.

<h3>What is a Linear Function?</h3>

The equation that models a linear function is, y = mx + b, where m is the slope and b is the y-intercept.

Slope of the graphed function = rise/run = - 2/1 = -2

Using one of the points on the line (x, y) = (5, 0) and the slope, m = -2, find the y-intercept (b) by substituting the values into y = mx + b:

0 = -2(5) + b

0 = -10 + b

10 = b

b = 10

The slope (m) of the graphed function is -2, and the y-intercept (b) is: 10.

Slope (m) of table A = change in y/change in x = (14 - 8)/(3 - 1) = 3

Substitute a point (x, y) = (1, 8) and slope (m) = 3 into y = mx + b to find the y-intercept (b):

8 = 3(1) + b

8 - 3 = b

5 = b

b = 5

Therefore the table with the same y-intercept as the graphed function is table A.

Learn more about linear function on:

brainly.com/question/4025726

#SPJ1

5 0
2 years ago
Find BC<br> (triangle)<br> sides = 20mi, 22mi<br> inside = 95 degrees
Hunter-Best [27]
To solve this problem you need to know the law of cosines.

7 0
3 years ago
Other questions:
  • What is the product? Assume x20 ( 13x + 15 )( V15x+2/30 O 3x 15+3./165x + 10-16 O 3x V5+6 /10x+5-3x+10.56 0 3x √5 + 10/6 6./3x +
    9·1 answer
  • What is the minimum number of students, each of whom comes from one of the 50 states, who must be enrolled in a university to gu
    13·1 answer
  • To celebrate ratios, Mrs. Johnson’s class will make pizzas. Julio is in charge of bringing in the sauce. There are 30 students i
    12·2 answers
  • Real life situation where an estimate makes sense
    5·1 answer
  • The graph is shown for the equation y = –x + 4.
    8·1 answer
  • Find all the powers of 4 in the range 4 through 1000
    13·1 answer
  • What is the Y intercept of f(x) = (1/4)^x?
    7·1 answer
  • Please help (Timed)!!!!!!!!!!!!!!
    12·1 answer
  • PLEASE ANSWER!!
    8·1 answer
  • What is the range for the possible side length AB of ABC?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!