PLEASE HELP! I WILL MARK YOU AS BRAINLIEST!

22/7x5x5( formula is pie x r2)
110/7 x5
550/7 (divide it)
78.571
2 DEC=78.570
39.28 cm square
area of semi circle=(π×r^2)/2
radius=5cm
so (π×5^2)/2=78.55/2=39.275 which is gonna be in nearest 2 decimal is 39.28