From an angle of depression of 20 degrees , John watches his friend approach his building while standing
on the rooftop. The rooftop is 18 m from the ground,
and John's eye level is at about 2m from the rooftop.
What is the distance between John's friend and the
building? Sketch a diagram to support your answer
(round your answer to the nearest whole number).

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.

600,000,000,000, or 6e14

step-by-step explanation:

and?

step-by-step explanation: