3)
5 m
A) 78.5 m2
B) 15.7 m2
C) 81.7 ml
D) 1961.5 m2

Hey there!
Assuming you want to find the area.
The area of formula is: a = πr^2
πr^2
≈ 3.14(5)^2
≈ 3.14(5 * 5)
≈ 3.14(25)
≈ 78.5
Therefore, your answer is:
Option A. 78.5 m^2
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)