Answer:c
Step-by-step explanation:
Apex
7^2+5^2= 74 now you have to square root 74 which is 8.60233 or 8.6
It have more energy picking up more particles in less time
Answer:
total surface area of cone is πr (r+l)
22/7 x 3 (3+4)
22/7*3 (7)
22 x 3 ( as 7 that was divided by 22 was cut out with 7 in the bracket)
hence,
TSA of cone = 66pi