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Anuta_ua [19.1K]
3 years ago
9

Find the volume of the cone to the nearest whole number. Radius is 2 and height is 4

Mathematics
1 answer:
KonstantinChe [14]3 years ago
6 0

Volume of the cone is 17 cm³

Step-by-step explanation:

  • Step 1: Volume of a cone = 1/3 πr²h. Find volume of the cone where r = 2 inches and h = 4 cm.

Volume = 1/3 × 3.14 × 2² × 4

             = 16.75 cm³ ≈ 17 cm³ (rounding off to nearest whole number)

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In the figure, AB is a diameter of circle P. What is the arc measure of AD in degrees?
fiasKO [112]

The arc measure of AD in degrees is 43 degrees.

<u>Step-by-step explanation</u>:

  • The angle measure of the straight line is 180°.
  • ∠APD + ∠DPC + ∠CPB = 180°

⇒ (7x+1)° + 90° + (9x-7)° = 180°

⇒ 16x + 84° = 180°

⇒ 16x = 96°

⇒ x = 96/16

x = 6

Substitute x=6 for angle ∠APD = (7x+1)°

∠APD = 7(6)+1 = 43°

The arc measure of AD in degrees = 43 degrees.

8 0
3 years ago
Circle A has a diameter of 9 inches, a circumference of 28.26 inches, and an area of 63.585 square inches. The diameter of circl
sergiy2304 [10]
A) The equation for circumference is C=2piR. So Filling in for circle A we have 28.26=2*pi*4.5 so we want to isolate pi which I'm gonna call x for it's easier for me xD. So we're gonna start by dividing 4.5 from each side which is gonna leave us with 6.28=2*x which gives you x(pi)= 3.14. For circle B we have 15.70=2*x*2.5 isolate x by first dividing 2.5 which leaves us again with 6.28=2x and x= 3.14. 
B) The equation for area is A=piR^2. So again for circle A we have 63.585=x9^2. This one is harder but also are you sure that the area is 63.585 it's supposed to be 254.469 (We'll come back to this)
C) The observation you can make about the value of pi for circles A and B is that it stays consistent at 3.14
8 0
3 years ago
How do you add and subtract fractions??
Semenov [28]
To add fractions they're suppose to have the same base or denominator then u add the top

To subtract it's the same but u subtract the top
5 0
3 years ago
Read 2 more answers
abrl,belle and cindy have $408 altogeter.belle has $7 more than cindy and $5 more than abel.how much does abel have?
faltersainse [42]
ABC = 408 
C + 7 = B
A + 5 = B 

B - 7 + B - 5 + B = 408
3B - 12 = 408
     + 12 = +12
3B = 420
/3   = /3
B = 120
A = 115
C = 113
The answer is A = 115, Abel has $ 115

4 0
3 years ago
What is the gcf of of -9y^2 + 6y
Valentin [98]

Answer:

3y

Step-by-step explanation:

First find the factors of the terms.  You need to then figure out how many factors match.

-9y² = -1 · 3 · 3 · y · y

6y = 2 · 3 · y

3y is the greatest common factor.

5 0
3 years ago
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