# Math Help - Pie charts help

1. ## Pie charts help

I have a pie chart showing a girl's daily activities. I have the angles and I need to calculate the time in hours.

This girl spends 150 degrees of her time sleeping. How many hours is that (explanation included pls). Thanks

2. Well if 360 degrees is 24 hours, find how many hours one degree is.

24 hours -> 360 degrees means (24/360) hours -> degree.

Then multiply that by 150:

(150*24/360) -> 150 degrees.

3. Originally Posted by angelmt
I have a pie chart showing a girl's daily activities. I have the angles and I need to calculate the time in hours.

This girl spends 150 degrees of her time sleeping. How many hours is that (explanation included pls). Thanks
$\frac{150}{360} \cdot 24$ hours. Do you see why?

4. ## Confirmation

So, if I worked it out well, the answer should approximately equal to 7 hrs.

5. Originally Posted by angelmt
So, if I worked it out well, the answer should approximately equal to 7 hrs.