Question

The solid is similar to a larger solid with the given scale factor. find the surface area and the volume of the larger solid

Answer 1

hm, well i answered your other question straight up, so if you can figure out how i got that, then you might be able to do this...

Answer 2

so you just have to multiply the volume by the scale left hand side and right hand side

Answer 3

sorry
divide by left side, multiply by right side... thats how scales work

Answer 4

so for the rectangle, the new scale factor would be 9:27...

Answer 5

well you only need the volume right? so take the volume of the rectangle prism (495) then divide by 1 and multiply by 3 because its 1:3

Answer 6

i need the surface area and volume

Answer 7

is that whats on the side? S and V?

Answer 8

yea

Answer 9

ok so you only need to use those and the scale to work it out... so say i have a S=6 and scale 2:6 my S=(6/2)*6=18 can you relate that to the question you have??

Answer 10

so i would do (3/1)*398

Answer 11

no, you would do (398/1)*3

Answer 12

i chose bad numbers, which were easy to mix up sorry

Answer 13

so the surface area would =1194in^2

Answer 14

yes

Answer 15

would it be the same for volume?

Answer 16

yeah, you do it the same way. cause they already gave you the volume, just in the wrong scale... so its (495/1)*3 which i know you can do... so what is the answers for teh rectangle?

Answer 17

1485in^3

Answer 18

yeah, but what about the other picture... can you tell me the answers for that? you just do it the same way.

Answer 19

(144*pi/3)*2=301.44cm^2

Answer 20

thats not the same way.

Answer 21

oh wait, is that blurry thing pi? if so then yeah thats right

Answer 22

it says 144 pi cm^2 for the surface doesn't it?

Answer 23

yea it is

Answer 24

ok cool, you got it congrats :)

Answer 25

(288*pi/3)*2=602.88cm^3

Answer 26

oh no
its ((144*pi)/2)*3 sorry... so close, but it was just a small error

Answer 27

Surface are= 678.24cm^2

Answer 28

yep, final answer :)

Answer 29

volume=1356.48cm^3

Answer 30

yes. what are you in like grade 8? doing better than i was then...

Answer 31

no

Answer 32

lower grade?

Answer 33

im actually a senior

Answer 34

i'd count grade 8 as senior :( scales took me ages was my point anwyay

Answer 35

oh okay

Answer 36

and you got the powers right which was pretty cool :P

Answer 37

thank you for ur help

Answer 38

no problem