Question

if u answer all i will mark u brainlist

Answer 1

3.

8,12,16,24

8:12::16:24

8:12 = 16:24

2:3 = 4:6

2:3 = 2:3

these are in proportion.

4.

breadth = area/length

= 80cm²/16cm

= 5cm

the breadth of rectangle is 5cm

hope it helps.