Answer:
255.7 cm²
Step-by-step explanation:
A = 10²(3.14) = 314
(293/360)(314) = 255.7 cm²
255,56
L = 293/360 x 314 = 255,56
P≈28.28cm
d = Diagonal 10cm
Using the formulas
P=4a
d=2a
Solving for P
P=22d=2·2·10≈28.28427cm
450 - 396 = 54
(54/450) * 100% = 12%
Hence the decrease is 12%.