Answer:
79%
Step-by-step explanation:
To find the median, you need to arrange the numbers in ascending order. Than pick the middle number. If there are two middle numbers then you add them together and then divide by 2.
3/8 because its out of 8 contestants n I don't think it includes the 140 audience,including the 30 students being a part if it
Answer:

Step-by-step explanation:
Given
Shape: dome

Required
The surface area
This is calculated as:

So, we have:


Find out how many liters are used in the old toilet in a year;
4×27= 108 l (in a day)
365×108= 39420 liters (in a year)
Find out how many liters are used in the new toilet;
4×6=24 (in a day)
24×365=8760 l (in a year)
Find the water saved; 39420-8760
= 30660 l saved.
Hope I helped :)