Answer:
A≈12.57cm²
Step-by-step explanation:
A=1
4πd2=1
4·π·42≈12.56637cm²
35%
Explanation:
The overall percentage must add up to 100%
Because of this...
100% (total) - 49% (swimming) = 51%
51% - 16% (biking) = 35% (rollerblading)
Answer:
Step-by-step explanation: