Question

Matt has two similar ceramic bins, as shown below. The total surface area of the smaller bin is 131.9 square feet. What is the surface area of the larger bin?

Answer 1

can someone throughly explain this to me step by step?

Answer 2

anyone there?

Answer 3

Do you know where to begin with surface area ? :)

Answer 4

Ohh this is simple...
Surface area: 2pi*rh

Answer 5

the formula for the cylinder is...

Answer 6

2 pi rh

Answer 7

k

Answer 8

the first radius is 3

Answer 9

Use similar cylinders, and get the ratios equal to each other

Answer 10

and the second radius is 6

Answer 11

so wait

Answer 12

step by step

Answer 13

what do I do first?

Answer 14

Step 1: find h of the smaller bin

Answer 15

by plugging the radius in the surface formula?

Answer 16

131.9=2pirh+2pir^2

Answer 17

k

Answer 18

umm

Answer 19

they said the total area, so you also want the circles on top and bottom

Answer 20

so...

Answer 21

Each of them have an area of pir^2, that's why i added 2pi*r

Answer 22

the surface are times two?

Answer 23

so