2πrh= S
π = S/(2rh)
the answer to the question
Use photo math it’s a great tool
Answer:
Height of fir tree = 9 meters
height of pine tree= 12 meters
Step-by-step explanation:
The combined height of one fir tree and one pine tree is 21 meters. The height of 4 fir trees stacked on top of each other is 24 meters taller than one pine tree.
Let x be the height of fir tree and y be the height of pine tree

Subtract x from both sides

height of 4 fir trees = pine tree +24

Substitute 21-x or y in the above equation

Add x on both sides

Divide by 5 on both sides
x=9
Now plug in 9 for x and find out y


y=12
Height of fir tree = 9 meters
height of pine tree= 12 meters
C(t)=30t
Since 120/4= 30
That means it is $30 per ticket
If t represents the number of tickets bought and it’s $30 per ticket it’s 30t to find the total cost