Is this correct? Urgent maths

Look at the link: https://ibb.co/nfXw3U
For the question E, you have to find the area of shape E. Is this correct?:
10:16=E:256
10/16=E/256
1280/8=E
160cm^2=E

Reply 1

AzureCeleste

20

No.
Area Scale Factor is the linear scale factor squared.
So the linear scale factor is 10/16
The ASF is therefore (10/16)^2

((So E=ASF x Area of the large shape))

(10/16)^2=E/256
and then rearrange basically

Reply 2

Fifty345

OP

13

Original post by AzureCeleste

No.
Area Scale Factor is the linear scale factor squared.
So the linear scale factor is 10/16
The ASF is therefore (10/16)^2

((So E=ASF x Area of the large shape))

(10/16)^2=E/256
and then rearrange basically

Thanks will correct now

Reply 3

Fifty345

OP

13

Original post by AzureCeleste

No.
Area Scale Factor is the linear scale factor squared.
So the linear scale factor is 10/16
The ASF is therefore (10/16)^2

((So E=ASF x Area of the large shape))

(10/16)^2=E/256
and then rearrange basically

Look at the URL: https://ibb.co/f6Q2TU
but would you use the same principle for Q4?