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
adelina 88 [10]
1 year ago
8

27 solid iron spheres,each of radius x cm are melted to form a sphere with radius y cm ,find the ratio of x:y

Mathematics
1 answer:
madam [21]1 year ago
7 0

Radius of 1 solid iron sphere =r

→ Volume =34πr3

→ Volume of 27 solid iron

spheres =27x34πr3

→ 34πr'3=27x34πr3

r'3=2πr3

→r'=3r

(ii) Surface area =4+πr2

SA r'=4πr'2

=4π(3r)2=36πr2

S'S=36πr24πr2=91=1:9

You might be interested in
In the process of solving an equation, a student noticed that only integers remained on each side of the equation. The student c
ZanzabumX [31]

The correct answer is D. Why?

In that phase of solving he can not know that integers on each side will be equal or not.

Good luck!!!

6 0
2 years ago
If b is the midpoint of AC, which of the following choices is the value of x?
katrin [286]
If B is the midpoint of AC, that means that the distances from A to B and B to C are the same. The distance from A to B is 8x + 4, and the distance from B to C is 10x - 6, so we can set these two equivalent:

8x + 4 = 10x - 6

Solving for x:

4 = 2x - 6 (subtract 8x from both sides)
10 = 2x (add 6 to both sides)
5 = x (divide both sides by 2)

So, x = 5, which is the second option given.
8 0
3 years ago
4×..., biar jadi 100...<br><br><br>tolong ya kak...​
ladessa [460]

Answer:

25

Step-by-step explanation:

4×25 =100

____________

8 0
3 years ago
Plz help me with this
viva [34]

Answer:

The height on the plans is 6.5 inches

Step-by-step explanation:

1 inch of plan = 5 inch of dollhouse

we know the dollhouse is 32.5 inches, so we need to determine the unknown

x inch of plan = 32.5 inch of dollhouse

x = 32.5/5 = 6.5 inches

8 0
2 years ago
Which term is a perfect square of the root 3x4?<br>​
Volgvan

Answer:

4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • The length of a rectangle is 30 inches and the
    15·2 answers
  • When a number x is multiplied by 4 the result is 2/5 what is the vaule of x
    12·2 answers
  • 46 is 23% of what number ?
    5·1 answer
  • The cost of a computer is $849. The store is offering a 20% discount, and then a sales tax of 6% is added after the discount. WH
    11·1 answer
  • One hundred clothing stores go out of business. This will
    11·2 answers
  • Jerry's CD player can hold five compact disks on a rotating tray around point A. The CD tray can move only counterclockwise. Ans
    13·1 answer
  • A student is trying to solve the set of two equations given below:
    6·1 answer
  • Find the interquartile range for each data set.Round your answers to the nearest tenth. 19,13,15,26,11,15,17,5,2,0,2,2,4,3,4,6
    8·1 answer
  • PLS HELP<br> What is the value of x ?<br><br> A. 42<br><br> B. 43<br><br> C. 84<br><br> D. 86
    9·2 answers
  • 1. A triangle is rotated 35° about the origin. What is true about the relationship be pre-image?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!