Question

help!

Answer 1

yes

Answer 2

yes @geny55 ?

Answer 3

is this a pretest?

Answer 4

@Astrophysics

Answer 5

Perimeter is the distance around the 2d shape, so add all the numbers for the perimeter and the area of a rectangle is just length x width\[Area = l \times w\] once you have that you can multiply both of them by 7.5.

Answer 6

so i do 6+6+8+8?
@Astrophysics

Answer 7

Yes that's the perimeter

Answer 8

But you must multiply it by 7.5 for the scale factor

Answer 9

i got 210

Answer 10

Sounds good, now find the area

Answer 11

how

Answer 12

??

Answer 13

Read what I've said above

Answer 14

whats the area?

Answer 15

210?

Answer 16

No that's the perimeter, the area of a rectangle is length multiplied by the width.

Answer 17

and whats the length and width

Answer 18

@Astrophysics

Answer 19

You should really know this by now,
Note that the scale factor for area, the change in area is equal to the scale factor squared, which means the scale factor for area is \[7.5^2\]

Answer 20

so its 6 x 8

Answer 21

That's for the unscaled rectangle, yes.

Answer 22

so thats the length x width

Answer 23

Yes

Answer 24

ok so whats the area

Answer 25

I feel as if you're ignoring everything I've said

Answer 26

im not I'm learning :)
@Astrophysics

Answer 27

i got d

Answer 28

ok

Answer 29

am i right? @Astrophysics

Answer 30

How did you get the area?

Answer 31

area = 6 x 8
6 x 7.5= 45
8 x 7.5= 60
is that right?
@Astrophysics

Answer 32

Not quite, nice try though. Remember what I said to note earlier: `Note that the scale factor for area, the change in area is equal to the scale factor squared, which means the scale factor for area is`\[7.5^2\]

Answer 33

\[area = l \times w \times 7.5^2\]

Answer 34

i got 2,700

Answer 35

Good!

Answer 36

yay!