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
dalvyx [7]
3 years ago
13

Need help on both these questions please thank you

Mathematics
1 answer:
Elena L [17]3 years ago
8 0
Remember that the volume of a cone is 1/3 \pi r^2h
Thus;

1. 2^2 = 4
4pi(7) = 28pi
28/3 = 9 \frac{1}{3}
ANS = 9 \frac{1}{3}  \pi or ~29.32

2. d = 18, r = 9
9 ^ 2 = 81
81pi (18) = 1458pi
1458 / 3 = 486
ANS = 486 \pi or ~1526.81

You might be interested in
The volume of clay used to build a cylindrical pillar with a height of 9 centimeters is 324 pi cubic centimeters. The area of th
Marta_Voda [28]

Answer:

36 (Fill 3 in the blank)

Step-by-step explanation:

Given:

Volume of a cylinder = 324 π

Height = 9 cm

The formula to find the volume of a cylinder = Base area * height.

Base is a circle. So the area of a circle = πr^2

Volume of the cylindrical pillar = πr^2 h

324 π = πr^2 . 9

πr^2 = 324 π /9

πr^2 = 36 π

The area of the base = 36 π

Thank you.

7 0
2 years ago
Read 2 more answers
What is the radius of a circle whose equation is x2 + y2 + 8x – 6y + 21 = 0?
uysha [10]
Radius=2
center(-2,4)
4 0
3 years ago
Read 2 more answers
Use a translation rule to describe the translation of ABC that is 6 units to the right and 10 units down.​
vesna_86 [32]

Answer:

(x, y ) → (x + 6, y - 10 )

Step-by-step explanation:

6 units right is + 6 in the x- direction

10 units down is - 10 in the y- direction

the translation rule is

(x, y ) → (x + 6, y - 10 )

6 0
2 years ago
How long it will take 2000$ to double if it is invested at 6% interest compounded semi annually
katen-ka-za [31]

Answer:

Step-by-step explanation:

4 0
2 years ago
What is this answer?
Rainbow [258]

Answer:

None of the above

Step-by-step explanation:

3^3=81

-3^3=-81

6^3=216

-6^3=-216

5^3=125

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which product is positive?
    6·1 answer
  • Can someone help me find the volume of this shape then round to the nearest 10th?
    5·1 answer
  • Dune buggy beach travel rents dune buggies for $50 for 4 hours or $75 for 6 hours. what is the hourly rate?
    6·1 answer
  • Cherie measures and records the lengths and sizes of the same style of a sandal found at a shoe store.
    15·2 answers
  • Help solve the above equation
    9·1 answer
  • Which of these groups of relative frequencies would be best represented by a pie chart?
    14·1 answer
  • How do you convert feet into yards?
    8·2 answers
  • What is 45% in a fraction ?
    14·2 answers
  • What is 5x – 8x + 2 + 5=
    13·2 answers
  • Need help with this question 30 points and ill give brainlist ASAP
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!