Answer:
(a)1815 feet
(b)665 feet
Step-by-step explanation:
(a)From the diagram, we want to determine the height CN of the tower.

- The CN tower is 1815 feet tall.
(b)To determine how far below the pinnacle of the tower the restaurant is located. We are to determine the distance RN.
|CR|+|RN|=|CN|
First, we determine |CR|

|CR|+|RN|=|CN|
|RN|=|CN|-|CR|=1815-1150=665 feet
The restaurant is located 665 feet below the pinnacle of the tower.
we are given

Since, we have to solve for w
so, we will isolate w on anyone side
Multiply both sides by 5



so,
option-D..........Answer
The percent decrease=(1-(240,000/300,000))*100%=20% decrease.