Answer:
1. r=7; d=14; c=43.96
2. r=6; d=12; c=37.68
3. r=9.5; d=19; c= 59.66
Step-by-step explanation:
There you go :)
Answer:2.78×10^2
22+52+424-220
=278
In standard form
=2.78×10^2
Answer: c
are going to mark me brainly
