Sin and Cos Graphs... What?

[reemah]

Two volcanos, both exactly 10,000 feet high, stand directly next to each other. Together the volcanos are 75,000 feet wide and each side of the volcano is equal. It takes lava 60 seconds to go from the top of the volcano to the base. The lava pours out of each side of each volcano exactly when the lava reaches the base of the previous. Imagine the lava always starts from the left side going right.
a- Find an equation of how long it will take for the last side of the volcano to be completely covered with lava
b- Determine how many feet the lava has reached at 150 seconds
c- Determine how many feet the lava has reached at 185 seconds

 

[stapel]

Two volcanos, both exactly 10,000 feet high, stand directly next to each other. Together the volcanos are 75,000 feet wide and each side of the volcano is equal. It takes lava 60 seconds to go from the top of the volcano to the base. The lava pours out of each side of each volcano exactly when the lava reaches the base of the previous. Imagine the lava always starts from the left side going right.
a- Find an equation of how long it will take for the last side of the volcano to be completely covered with lava
b- Determine how many feet the lava has reached at 150 seconds
c- Determine how many feet the lava has reached at 185 seconds

What have you tried? How have you started? How far have you gotten? Where are you stuck?

Please be complete, starting with how your subject line relates, if at all. Thank you!

 

[Quaid]

Two volcanos ... each side ... is equal

It takes lava 60 seconds to go from the top of the volcano to the base

lava pours out ... exactly when the lava reaches the base of the previous

lava always starts from the left side going right

how long it will take for the last side of the volcano to be completely covered with lava

Hi reemah.

I may have misread the exercise, but it seems like there are four sides over which the lava flows, one side after the other (left to right).

If lava takes 60 seconds per side to cover, would it take (4)(60) seconds to cover four sides?

I must be confused! :cool:

How do you interpret the exercise?