Astandard letter-sized piece of paper has a length and width of 8.5 inches by 11 inches.
d. what would the area be after 7 folds?

Area after 7 folds = 0.73 inch²

Step-by-step explanation:

After 1 fold width or length reduces to half.

Area = Length x width

So after 1 fold area will reduce to half.

So we have

Initial area = 8.5 x 11 = 93.5 inch²

Number of folds = 7

Area after 7 folds = 0.73 inch²

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.