Question

answer the following​

Answer 1

l=b+12

l×b=640

(b+12)b=64

b²+12b-640=0

b=-32 or b=20

since breadth will be positive b=20m

so,

l=b+12

l=20+12=32m

therefore length=30m, width=12m

1st Option is right

i hope it helps

pls mark brainliest^^