Question

if you know thr answer ten only answer don't scam of you don't know pls don't answer ​

Answer 1

Answer:

Hope the answer helps you

Thanks

Answer 2

Answer:

8cm

Step-by-step explanation:

Area of trapezium = 21×(sum of parallel sides)×altitude

Let other parallel side be x cm.

Then, 

21(x+6)×4=28

⇒2(x+6)=28

⇒x=14−6

⇒x=8cm