Answer:
okay let's start
Step-by-step explanation:

12 red counters
7 more red counters than yellow counters
12 - 7 = 5 yellow counters
Dara has 5 yellow counters.
The volume of a cone is (1/3) that of its similar cylinder.
Thus the volume of the cone B would be:
15:10
3:2
Hope this helps :)
Lets find out...
a^2 + b^2 = c^2
27^2 + 79^2 = 84^2
729 + 6241 = 7056
6970 = 7056....incorrect....no, it is NOT a right triangle