Hey There :)
This is because one is half of two. You could also multiply 2 * 0.5= 1, 0.5 represents

and two is the whole number. This is how

of two equals one.
Have A Brainly Day :)
Answer:
4900
Step-by-step explanation:
70^2 means 70*70
70*70=4900
Yep... so they says that the area of the extended leaf is 18+6x... You know that the area is length into breath... here the breath doesn't change.. so it'll be 3ft... can get the length by dividing area by 3... that is 6+2x... Now the new length wil be 2times that plus the previous 6ft length
C-d=b add to both sides d and will get
c-d+d=b+d
c=b+d
hope helped