Answer:
5.71428571429
Step-by-step explanation:
First is 7 second is 8 third is 3
Step-by-step explanation:
The question is not properly structured but we can as well find the sum of 5/7 and 10 as shown;

Hence the expression written in equivalent form of common denominator is 
The sum is 
Answer:
x=44
Step-by-step explanation:
33+103+x=180
136+x=180
x=44
The volume of a cone is 1/3 pi r^2 h. So by substitution, V = 1/3 of 80pi which simplifies to V=26.667pi, which when multiplied out, provides the answer V = 83.8 cubic meters.