Question

If the scale factor between two similar solids is 2:5, then the ratio of their lateral areas is 4:10

Answer 1

will award medals

Answer 2

true or false

Answer 3

@SolomonZelman lz help

Answer 4

@jim_thompson5910 plz help me

Answer 5

somebody help me

Answer 6

This is false because the ratio of the areas is really

4:25

Notice how 4 = 2^2 and 25 = 5^2

Answer 7

he ratio for the lengths of radii of similar cylinders is 6 : 4. What is the ratio of their volumes?

Answer 8

what about this @jim_thompson5910

Answer 9

if two figures have ratio a:b, then their volumes are in ratio a^3:b^3

Answer 10

it might help to reduce 6:4 first

Answer 11

so 27 and 8
??

Answer 12

@jim_thompson5910

Answer 13

@jim_thompson5910 plz help

Answer 14

correct

Answer 15

In a certain cylinder the sum of the areas of the two bases is equal to the lateral area. How is the length of the altitude related to the radius?
what about this

Answer 16

@jim_thompson5910 plz help

Answer 17

@jim_thompson5910 plz help me

Answer 18

Each base has an area of pi*r^2

Answer 19

The lateral area is 2*pi*r*h

Answer 20

" the sum of the areas of the two bases is equal to the lateral area"

So,

pi*r^2 + pi*r^2 = 2*pi*r*h

solve for h to get your answer

Answer 21

can u do that for me plz cause i am not good at it

Answer 22

@jim_thompson5910

Answer 23

ok this will be the last one I'll help with

Answer 24

ok sir

Answer 25

pi*r^2 + pi*r^2 = 2*pi*r*h

2*pi*r^2 = 2*pi*r*h

pi*r^2 = pi*r*h ... Divide both sides by 2

r^2 = r*h ... Divide both sides by pi

r = h ... Divide both sides by r

So that means h = r (the height and radius are the same, whatever they are)